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Finding the Fourth Proportional to 155,950.24, 215,211.20 and 84,330.12

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Solution

The fourth proportional to 155,950.24, 215,211.20 and 84,330.12 is: 116,375.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,950.24 : 215,211.20 = 84,330.12 : x
  2. Step 2: Convert to fraction form
    155,950.24/215,211.20 = 84,330.12/x
  3. Step 3: Cross multiply
    155,950.24x = 215,211.20 × 84,330.12
  4. Step 4: Simplify right side
    155,950.24x = 18,148,786,321.34
  5. Step 5: Solve for x
    x = 18,148,786,321.34/155,950.24
  6. Step 6: Final answer
    x = 116,375.49

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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.