Home / 131,475,220.28-181,434,458.76-72,738,305.78

Finding the Fourth Proportional to 131,475,220.28, 181,434,458.76 and 72,738,305.78

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Solution

The fourth proportional to 131,475,220.28, 181,434,458.76 and 72,738,305.78 is: 100,378,117.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,475,220.28 : 181,434,458.76 = 72,738,305.78 : x
  2. Step 2: Convert to fraction form
    131,475,220.28/181,434,458.76 = 72,738,305.78/x
  3. Step 3: Cross multiply
    131,475,220.28x = 181,434,458.76 × 72,738,305.78
  4. Step 4: Simplify right side
    131,475,220.28x = 13,197,235,140,313,680
  5. Step 5: Solve for x
    x = 13,197,235,140,313,680/131,475,220.28
  6. Step 6: Final answer
    x = 100,378,117.73

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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.