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Finding the Fourth Proportional to 127,898.48, 191,840.70 and 39,151.92

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Solution

The fourth proportional to 127,898.48, 191,840.70 and 39,151.92 is: 58,725.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,898.48 : 191,840.70 = 39,151.92 : x
  2. Step 2: Convert to fraction form
    127,898.48/191,840.70 = 39,151.92/x
  3. Step 3: Cross multiply
    127,898.48x = 191,840.70 × 39,151.92
  4. Step 4: Simplify right side
    127,898.48x = 7,510,931,739.14
  5. Step 5: Solve for x
    x = 7,510,931,739.14/127,898.48
  6. Step 6: Final answer
    x = 58,725.73

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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.