Home / 108,320.10-162,480.15-72,890.70

Finding the Fourth Proportional to 108,320.10, 162,480.15 and 72,890.70

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Solution

The fourth proportional to 108,320.10, 162,480.15 and 72,890.70 is: 109,336.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,320.10 : 162,480.15 = 72,890.70 : x
  2. Step 2: Convert to fraction form
    108,320.10/162,480.15 = 72,890.70/x
  3. Step 3: Cross multiply
    108,320.10x = 162,480.15 × 72,890.70
  4. Step 4: Simplify right side
    108,320.10x = 11,843,291,869.61
  5. Step 5: Solve for x
    x = 11,843,291,869.61/108,320.10
  6. Step 6: Final answer
    x = 109,336.05

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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.