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Finding the Fourth Proportional to 108,407.92, 162,641.16 and 45,207.12

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Solution

The fourth proportional to 108,407.92, 162,641.16 and 45,207.12 is: 67,822.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,407.92 : 162,641.16 = 45,207.12 : x
  2. Step 2: Convert to fraction form
    108,407.92/162,641.16 = 45,207.12/x
  3. Step 3: Cross multiply
    108,407.92x = 162,641.16 × 45,207.12
  4. Step 4: Simplify right side
    108,407.92x = 7,352,538,437.06
  5. Step 5: Solve for x
    x = 7,352,538,437.06/108,407.92
  6. Step 6: Final answer
    x = 67,822.89

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1.5x scale

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.