Home / 131,971.40-198,000.54-87,772.04

Finding the Fourth Proportional to 131,971.40, 198,000.54 and 87,772.04

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Solution

The fourth proportional to 131,971.40, 198,000.54 and 87,772.04 is: 131,686.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,971.40 : 198,000.54 = 87,772.04 : x
  2. Step 2: Convert to fraction form
    131,971.40/198,000.54 = 87,772.04/x
  3. Step 3: Cross multiply
    131,971.40x = 198,000.54 × 87,772.04
  4. Step 4: Simplify right side
    131,971.40x = 17,378,911,316.90
  5. Step 5: Solve for x
    x = 17,378,911,316.90/131,971.40
  6. Step 6: Final answer
    x = 131,686.95

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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.