Home / 128,011,780.56-176,656,251.16-69,274,439

Finding the Fourth Proportional to 128,011,780.56, 176,656,251.16 and 69,274,439

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Solution

The fourth proportional to 128,011,780.56, 176,656,251.16 and 69,274,439 is: 95,598,722.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,011,780.56 : 176,656,251.16 = 69,274,439 : x
  2. Step 2: Convert to fraction form
    128,011,780.56/176,656,251.16 = 69,274,439/x
  3. Step 3: Cross multiply
    128,011,780.56x = 176,656,251.16 × 69,274,439
  4. Step 4: Simplify right side
    128,011,780.56x = 12,237,762,694,952,098
  5. Step 5: Solve for x
    x = 12,237,762,694,952,098/128,011,780.56
  6. Step 6: Final answer
    x = 95,598,722.57

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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.