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Finding the Fourth Proportional to 127,603.20, 191,404.80 and 61,027.68

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Solution

The fourth proportional to 127,603.20, 191,404.80 and 61,027.68 is: 91,541.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,603.20 : 191,404.80 = 61,027.68 : x
  2. Step 2: Convert to fraction form
    127,603.20/191,404.80 = 61,027.68/x
  3. Step 3: Cross multiply
    127,603.20x = 191,404.80 × 61,027.68
  4. Step 4: Simplify right side
    127,603.20x = 11,680,990,884.86
  5. Step 5: Solve for x
    x = 11,680,990,884.86/127,603.20
  6. Step 6: Final answer
    x = 91,541.52

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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.