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Finding the Fourth Proportional to 131,805.60, 197,722.80 and 127,658.40

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Solution

The fourth proportional to 131,805.60, 197,722.80 and 127,658.40 is: 191,501.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,805.60 : 197,722.80 = 127,658.40 : x
  2. Step 2: Convert to fraction form
    131,805.60/197,722.80 = 127,658.40/x
  3. Step 3: Cross multiply
    131,805.60x = 197,722.80 × 127,658.40
  4. Step 4: Simplify right side
    131,805.60x = 25,240,976,291.52
  5. Step 5: Solve for x
    x = 25,240,976,291.52/131,805.60
  6. Step 6: Final answer
    x = 191,501.55

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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.