Home / 123,478.02-170,225.15-87,654.96

Finding the Fourth Proportional to 123,478.02, 170,225.15 and 87,654.96

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Solution

The fourth proportional to 123,478.02, 170,225.15 and 87,654.96 is: 120,839.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,478.02 : 170,225.15 = 87,654.96 : x
  2. Step 2: Convert to fraction form
    123,478.02/170,225.15 = 87,654.96/x
  3. Step 3: Cross multiply
    123,478.02x = 170,225.15 × 87,654.96
  4. Step 4: Simplify right side
    123,478.02x = 14,921,078,275.97
  5. Step 5: Solve for x
    x = 14,921,078,275.97/123,478.02
  6. Step 6: Final answer
    x = 120,839.95

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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.