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Finding the Fourth Proportional to 155,914.57, 215,162.12 and 84,294.57

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Solution

The fourth proportional to 155,914.57, 215,162.12 and 84,294.57 is: 116,326.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,914.57 : 215,162.12 = 84,294.57 : x
  2. Step 2: Convert to fraction form
    155,914.57/215,162.12 = 84,294.57/x
  3. Step 3: Cross multiply
    155,914.57x = 215,162.12 × 84,294.57
  4. Step 4: Simplify right side
    155,914.57x = 18,136,998,596.42
  5. Step 5: Solve for x
    x = 18,136,998,596.42/155,914.57
  6. Step 6: Final answer
    x = 116,326.52

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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.