Home / 149,715,780.31-206,615,709.24-90,195,813.02

Finding the Fourth Proportional to 149,715,780.31, 206,615,709.24 and 90,195,813.02

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Solution

The fourth proportional to 149,715,780.31, 206,615,709.24 and 90,195,813.02 is: 124,475,000.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,715,780.31 : 206,615,709.24 = 90,195,813.02 : x
  2. Step 2: Convert to fraction form
    149,715,780.31/206,615,709.24 = 90,195,813.02/x
  3. Step 3: Cross multiply
    149,715,780.31x = 206,615,709.24 × 90,195,813.02
  4. Step 4: Simplify right side
    149,715,780.31x = 18,635,871,877,718,472
  5. Step 5: Solve for x
    x = 18,635,871,877,718,472/149,715,780.31
  6. Step 6: Final answer
    x = 124,475,000.83

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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.