Home / 108,487.20-162,512.10-61,685.40

Finding the Fourth Proportional to 108,487.20, 162,512.10 and 61,685.40

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Solution

The fourth proportional to 108,487.20, 162,512.10 and 61,685.40 is: 92,403.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,487.20 : 162,512.10 = 61,685.40 : x
  2. Step 2: Convert to fraction form
    108,487.20/162,512.10 = 61,685.40/x
  3. Step 3: Cross multiply
    108,487.20x = 162,512.10 × 61,685.40
  4. Step 4: Simplify right side
    108,487.20x = 10,024,623,893.34
  5. Step 5: Solve for x
    x = 10,024,623,893.34/108,487.20
  6. Step 6: Final answer
    x = 92,403.75

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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.