Home / 131,397,543.87-181,329,785.44-72,664,160.78

Finding the Fourth Proportional to 131,397,543.87, 181,329,785.44 and 72,664,160.78

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Solution

The fourth proportional to 131,397,543.87, 181,329,785.44 and 72,664,160.78 is: 100,277,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,397,543.87 : 181,329,785.44 = 72,664,160.78 : x
  2. Step 2: Convert to fraction form
    131,397,543.87/181,329,785.44 = 72,664,160.78/x
  3. Step 3: Cross multiply
    131,397,543.87x = 181,329,785.44 × 72,664,160.78
  4. Step 4: Simplify right side
    131,397,543.87x = 13,176,176,682,326,754
  5. Step 5: Solve for x
    x = 13,176,176,682,326,754/131,397,543.87
  6. Step 6: Final answer
    x = 100,277,191.60

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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.