Home / 80,857,764.60-121,286,646.90-78,732,000.60

Finding the Fourth Proportional to 80,857,764.60, 121,286,646.90 and 78,732,000.60

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Solution

The fourth proportional to 80,857,764.60, 121,286,646.90 and 78,732,000.60 is: 118,098,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,857,764.60 : 121,286,646.90 = 78,732,000.60 : x
  2. Step 2: Convert to fraction form
    80,857,764.60/121,286,646.90 = 78,732,000.60/x
  3. Step 3: Cross multiply
    80,857,764.60x = 121,286,646.90 × 78,732,000.60
  4. Step 4: Simplify right side
    80,857,764.60x = 9,549,140,356,502,788
  5. Step 5: Solve for x
    x = 9,549,140,356,502,788/80,857,764.60
  6. Step 6: Final answer
    x = 118,098,000.90

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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.