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Finding the Fourth Proportional to 155,175.87, 232,865.88 and 85,104.39

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Solution

The fourth proportional to 155,175.87, 232,865.88 and 85,104.39 is: 127,712.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,175.87 : 232,865.88 = 85,104.39 : x
  2. Step 2: Convert to fraction form
    155,175.87/232,865.88 = 85,104.39/x
  3. Step 3: Cross multiply
    155,175.87x = 232,865.88 × 85,104.39
  4. Step 4: Simplify right side
    155,175.87x = 19,817,908,669.21
  5. Step 5: Solve for x
    x = 19,817,908,669.21/155,175.87
  6. Step 6: Final answer
    x = 127,712.57

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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.