Home / 261,926,793.90-392,890,190.85-77,700,912.30

Finding the Fourth Proportional to 261,926,793.90, 392,890,190.85 and 77,700,912.30

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Solution

The fourth proportional to 261,926,793.90, 392,890,190.85 and 77,700,912.30 is: 116,551,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,926,793.90 : 392,890,190.85 = 77,700,912.30 : x
  2. Step 2: Convert to fraction form
    261,926,793.90/392,890,190.85 = 77,700,912.30/x
  3. Step 3: Cross multiply
    261,926,793.90x = 392,890,190.85 × 77,700,912.30
  4. Step 4: Simplify right side
    261,926,793.90x = 30,527,926,262,766,112
  5. Step 5: Solve for x
    x = 30,527,926,262,766,112/261,926,793.90
  6. Step 6: Final answer
    x = 116,551,368.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.