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Finding the Fourth Proportional to 136,321.29, 204,483.23 and 85,045.53

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Solution

The fourth proportional to 136,321.29, 204,483.23 and 85,045.53 is: 127,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,321.29 : 204,483.23 = 85,045.53 : x
  2. Step 2: Convert to fraction form
    136,321.29/204,483.23 = 85,045.53/x
  3. Step 3: Cross multiply
    136,321.29x = 204,483.23 × 85,045.53
  4. Step 4: Simplify right side
    136,321.29x = 17,390,384,671.46
  5. Step 5: Solve for x
    x = 17,390,384,671.46/136,321.29
  6. Step 6: Final answer
    x = 127,569.10

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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.