Home / 129,117,519,782.47-178,246,686,036.43-80,304,074,199.03

Finding the Fourth Proportional to 129,117,519,782.47, 178,246,686,036.43 and 80,304,074,199.03

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Solution

The fourth proportional to 129,117,519,782.47, 178,246,686,036.43 and 80,304,074,199.03 is: 110,859,743,320.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,117,519,782.47 : 178,246,686,036.43 = 80,304,074,199.03 : x
  2. Step 2: Convert to fraction form
    129,117,519,782.47/178,246,686,036.43 = 80,304,074,199.03/x
  3. Step 3: Cross multiply
    129,117,519,782.47x = 178,246,686,036.43 × 80,304,074,199.03
  4. Step 4: Simplify right side
    129,117,519,782.47x = 14,313,935,101,200,678,518,784
  5. Step 5: Solve for x
    x = 14,313,935,101,200,678,518,784/129,117,519,782.47
  6. Step 6: Final answer
    x = 110,859,743,320.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.