Home / 131,382,877.80-181,300,581.18-72,640,932.60

Finding the Fourth Proportional to 131,382,877.80, 181,300,581.18 and 72,640,932.60

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Solution

The fourth proportional to 131,382,877.80, 181,300,581.18 and 72,640,932.60 is: 100,240,179.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,382,877.80 : 181,300,581.18 = 72,640,932.60 : x
  2. Step 2: Convert to fraction form
    131,382,877.80/181,300,581.18 = 72,640,932.60/x
  3. Step 3: Cross multiply
    131,382,877.80x = 181,300,581.18 × 72,640,932.60
  4. Step 4: Simplify right side
    131,382,877.80x = 13,169,843,297,837,208
  5. Step 5: Solve for x
    x = 13,169,843,297,837,208/131,382,877.80
  6. Step 6: Final answer
    x = 100,240,179.83

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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.