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Finding the Fourth Proportional to 108,560.70, 162,495.45 and 77,456.70

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Solution

The fourth proportional to 108,560.70, 162,495.45 and 77,456.70 is: 115,938.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,560.70 : 162,495.45 = 77,456.70 : x
  2. Step 2: Convert to fraction form
    108,560.70/162,495.45 = 77,456.70/x
  3. Step 3: Cross multiply
    108,560.70x = 162,495.45 × 77,456.70
  4. Step 4: Simplify right side
    108,560.70x = 12,586,361,322.02
  5. Step 5: Solve for x
    x = 12,586,361,322.02/108,560.70
  6. Step 6: Final answer
    x = 115,938.47

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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.