Home / 81,657,432.60-122,486,148.90-67,485,672.60

Finding the Fourth Proportional to 81,657,432.60, 122,486,148.90 and 67,485,672.60

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Solution

The fourth proportional to 81,657,432.60, 122,486,148.90 and 67,485,672.60 is: 101,228,508.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,432.60 : 122,486,148.90 = 67,485,672.60 : x
  2. Step 2: Convert to fraction form
    81,657,432.60/122,486,148.90 = 67,485,672.60/x
  3. Step 3: Cross multiply
    81,657,432.60x = 122,486,148.90 × 67,485,672.60
  4. Step 4: Simplify right side
    81,657,432.60x = 8,266,060,142,700,250
  5. Step 5: Solve for x
    x = 8,266,060,142,700,250/81,657,432.60
  6. Step 6: Final answer
    x = 101,228,508.90

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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.