Home / 131,382,862.78-181,300,560.50-72,640,917.58

Finding the Fourth Proportional to 131,382,862.78, 181,300,560.50 and 72,640,917.58

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Solution

The fourth proportional to 131,382,862.78, 181,300,560.50 and 72,640,917.58 is: 100,240,159.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,382,862.78 : 181,300,560.50 = 72,640,917.58 : x
  2. Step 2: Convert to fraction form
    131,382,862.78/181,300,560.50 = 72,640,917.58/x
  3. Step 3: Cross multiply
    131,382,862.78x = 181,300,560.50 × 72,640,917.58
  4. Step 4: Simplify right side
    131,382,862.78x = 13,169,839,072,488,304
  5. Step 5: Solve for x
    x = 13,169,839,072,488,304/131,382,862.78
  6. Step 6: Final answer
    x = 100,240,159.13

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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.