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Finding the Fourth Proportional to 108,690.92, 162,795.50 and 83,545.80

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Solution

The fourth proportional to 108,690.92, 162,795.50 and 83,545.80 is: 125,133.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,690.92 : 162,795.50 = 83,545.80 : x
  2. Step 2: Convert to fraction form
    108,690.92/162,795.50 = 83,545.80/x
  3. Step 3: Cross multiply
    108,690.92x = 162,795.50 × 83,545.80
  4. Step 4: Simplify right side
    108,690.92x = 13,600,880,283.90
  5. Step 5: Solve for x
    x = 13,600,880,283.90/108,690.92
  6. Step 6: Final answer
    x = 125,133.55

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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.