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Finding the Fourth Proportional to 109,089.61, 150,538.15 and 61,340.11

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Solution

The fourth proportional to 109,089.61, 150,538.15 and 61,340.11 is: 84,646.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,089.61 : 150,538.15 = 61,340.11 : x
  2. Step 2: Convert to fraction form
    109,089.61/150,538.15 = 61,340.11/x
  3. Step 3: Cross multiply
    109,089.61x = 150,538.15 × 61,340.11
  4. Step 4: Simplify right side
    109,089.61x = 9,234,026,680.20
  5. Step 5: Solve for x
    x = 9,234,026,680.20/109,089.61
  6. Step 6: Final answer
    x = 84,646.25

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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.