Home / 131,937.93-198,171.61-78,733.69

Finding the Fourth Proportional to 131,937.93, 198,171.61 and 78,733.69

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Solution

The fourth proportional to 131,937.93, 198,171.61 and 78,733.69 is: 118,258.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,937.93 : 198,171.61 = 78,733.69 : x
  2. Step 2: Convert to fraction form
    131,937.93/198,171.61 = 78,733.69/x
  3. Step 3: Cross multiply
    131,937.93x = 198,171.61 × 78,733.69
  4. Step 4: Simplify right side
    131,937.93x = 15,602,781,416.28
  5. Step 5: Solve for x
    x = 15,602,781,416.28/131,937.93
  6. Step 6: Final answer
    x = 118,258.50

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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.