Home / 138,132.04-190,604.28-77,700.64

Finding the Fourth Proportional to 138,132.04, 190,604.28 and 77,700.64

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Solution

The fourth proportional to 138,132.04, 190,604.28 and 77,700.64 is: 107,216.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,132.04 : 190,604.28 = 77,700.64 : x
  2. Step 2: Convert to fraction form
    138,132.04/190,604.28 = 77,700.64/x
  3. Step 3: Cross multiply
    138,132.04x = 190,604.28 × 77,700.64
  4. Step 4: Simplify right side
    138,132.04x = 14,810,074,542.74
  5. Step 5: Solve for x
    x = 14,810,074,542.74/138,132.04
  6. Step 6: Final answer
    x = 107,216.79

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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.