Home / 121,379,140.80-182,068,711.20-84,390,847.20

Finding the Fourth Proportional to 121,379,140.80, 182,068,711.20 and 84,390,847.20

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Solution

The fourth proportional to 121,379,140.80, 182,068,711.20 and 84,390,847.20 is: 126,586,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,379,140.80 : 182,068,711.20 = 84,390,847.20 : x
  2. Step 2: Convert to fraction form
    121,379,140.80/182,068,711.20 = 84,390,847.20/x
  3. Step 3: Cross multiply
    121,379,140.80x = 182,068,711.20 × 84,390,847.20
  4. Step 4: Simplify right side
    121,379,140.80x = 15,364,932,786,780,128
  5. Step 5: Solve for x
    x = 15,364,932,786,780,128/121,379,140.80
  6. Step 6: Final answer
    x = 126,586,270.80

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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.