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Finding the Fourth Proportional to 108,341.10, 162,511.65 and 72,911.70

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Solution

The fourth proportional to 108,341.10, 162,511.65 and 72,911.70 is: 109,367.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,341.10 : 162,511.65 = 72,911.70 : x
  2. Step 2: Convert to fraction form
    108,341.10/162,511.65 = 72,911.70/x
  3. Step 3: Cross multiply
    108,341.10x = 162,511.65 × 72,911.70
  4. Step 4: Simplify right side
    108,341.10x = 11,849,000,671.31
  5. Step 5: Solve for x
    x = 11,849,000,671.31/108,341.10
  6. Step 6: Final answer
    x = 109,367.55

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1.5x scale

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.