Home / 121,765.02-182,684.45-86,294.92

Finding the Fourth Proportional to 121,765.02, 182,684.45 and 86,294.92

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Solution

The fourth proportional to 121,765.02, 182,684.45 and 86,294.92 is: 129,468.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,765.02 : 182,684.45 = 86,294.92 : x
  2. Step 2: Convert to fraction form
    121,765.02/182,684.45 = 86,294.92/x
  3. Step 3: Cross multiply
    121,765.02x = 182,684.45 × 86,294.92
  4. Step 4: Simplify right side
    121,765.02x = 15,764,739,997.99
  5. Step 5: Solve for x
    x = 15,764,739,997.99/121,765.02
  6. Step 6: Final answer
    x = 129,468.55

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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.