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Finding the Fourth Proportional to 160,000.65, 220,795.89 and 87,402.38

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Solution

The fourth proportional to 160,000.65, 220,795.89 and 87,402.38 is: 120,612.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,000.65 : 220,795.89 = 87,402.38 : x
  2. Step 2: Convert to fraction form
    160,000.65/220,795.89 = 87,402.38/x
  3. Step 3: Cross multiply
    160,000.65x = 220,795.89 × 87,402.38
  4. Step 4: Simplify right side
    160,000.65x = 19,298,086,280.22
  5. Step 5: Solve for x
    x = 19,298,086,280.22/160,000.65
  6. Step 6: Final answer
    x = 120,612.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.