Home / 131,120,814.51-180,941,981.58-72,382,218.93

Finding the Fourth Proportional to 131,120,814.51, 180,941,981.58 and 72,382,218.93

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Solution

The fourth proportional to 131,120,814.51, 180,941,981.58 and 72,382,218.93 is: 99,884,844.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,120,814.51 : 180,941,981.58 = 72,382,218.93 : x
  2. Step 2: Convert to fraction form
    131,120,814.51/180,941,981.58 = 72,382,218.93/x
  3. Step 3: Cross multiply
    131,120,814.51x = 180,941,981.58 × 72,382,218.93
  4. Step 4: Simplify right side
    131,120,814.51x = 13,096,982,124,351,590
  5. Step 5: Solve for x
    x = 13,096,982,124,351,590/131,120,814.51
  6. Step 6: Final answer
    x = 99,884,844.17

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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.