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Finding the Fourth Proportional to 155,173.87, 232,862.87 and 85,102.39

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Solution

The fourth proportional to 155,173.87, 232,862.87 and 85,102.39 is: 127,709.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,173.87 : 232,862.87 = 85,102.39 : x
  2. Step 2: Convert to fraction form
    155,173.87/232,862.87 = 85,102.39/x
  3. Step 3: Cross multiply
    155,173.87x = 232,862.87 × 85,102.39
  4. Step 4: Simplify right side
    155,173.87x = 19,817,186,779.26
  5. Step 5: Solve for x
    x = 19,817,186,779.26/155,173.87
  6. Step 6: Final answer
    x = 127,709.56

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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.