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Finding the Fourth Proportional to 108,300.92, 162,264.11 and 76,657.32

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Solution

The fourth proportional to 108,300.92, 162,264.11 and 76,657.32 is: 114,853.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,300.92 : 162,264.11 = 76,657.32 : x
  2. Step 2: Convert to fraction form
    108,300.92/162,264.11 = 76,657.32/x
  3. Step 3: Cross multiply
    108,300.92x = 162,264.11 × 76,657.32
  4. Step 4: Simplify right side
    108,300.92x = 12,438,731,421.50
  5. Step 5: Solve for x
    x = 12,438,731,421.50/108,300.92
  6. Step 6: Final answer
    x = 114,853.43

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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.