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Finding the Fourth Proportional to 128,337.64, 192,346.07 and 61,759.89

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Solution

The fourth proportional to 128,337.64, 192,346.07 and 61,759.89 is: 92,562.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,337.64 : 192,346.07 = 61,759.89 : x
  2. Step 2: Convert to fraction form
    128,337.64/192,346.07 = 61,759.89/x
  3. Step 3: Cross multiply
    128,337.64x = 192,346.07 × 61,759.89
  4. Step 4: Simplify right side
    128,337.64x = 11,879,272,125.13
  5. Step 5: Solve for x
    x = 11,879,272,125.13/128,337.64
  6. Step 6: Final answer
    x = 92,562.65

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1.5x scale

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.