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Finding the Fourth Proportional to 108,515.70, 162,643.95 and 55,898.10

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Solution

The fourth proportional to 108,515.70, 162,643.95 and 55,898.10 is: 83,780.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,515.70 : 162,643.95 = 55,898.10 : x
  2. Step 2: Convert to fraction form
    108,515.70/162,643.95 = 55,898.10/x
  3. Step 3: Cross multiply
    108,515.70x = 162,643.95 × 55,898.10
  4. Step 4: Simplify right side
    108,515.70x = 9,091,487,781.50
  5. Step 5: Solve for x
    x = 9,091,487,781.50/108,515.70
  6. Step 6: Final answer
    x = 83,780.39

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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.