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Finding the Fourth Proportional to 123,702.08, 170,624.16 and 85,949.12

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Solution

The fourth proportional to 123,702.08, 170,624.16 and 85,949.12 is: 118,550.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,702.08 : 170,624.16 = 85,949.12 : x
  2. Step 2: Convert to fraction form
    123,702.08/170,624.16 = 85,949.12/x
  3. Step 3: Cross multiply
    123,702.08x = 170,624.16 × 85,949.12
  4. Step 4: Simplify right side
    123,702.08x = 14,664,996,402.74
  5. Step 5: Solve for x
    x = 14,664,996,402.74/123,702.08
  6. Step 6: Final answer
    x = 118,550.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.