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Finding the Fourth Proportional to 109,458.95, 151,053.53 and 61,712.17

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Solution

The fourth proportional to 109,458.95, 151,053.53 and 61,712.17 is: 85,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,458.95 : 151,053.53 = 61,712.17 : x
  2. Step 2: Convert to fraction form
    109,458.95/151,053.53 = 61,712.17/x
  3. Step 3: Cross multiply
    109,458.95x = 151,053.53 × 61,712.17
  4. Step 4: Simplify right side
    109,458.95x = 9,321,841,122.46
  5. Step 5: Solve for x
    x = 9,321,841,122.46/109,458.95
  6. Step 6: Final answer
    x = 85,162.90

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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.