Home / 131,988.64-198,086.64-72,865.12

Finding the Fourth Proportional to 131,988.64, 198,086.64 and 72,865.12

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Solution

The fourth proportional to 131,988.64, 198,086.64 and 72,865.12 is: 109,354.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,988.64 : 198,086.64 = 72,865.12 : x
  2. Step 2: Convert to fraction form
    131,988.64/198,086.64 = 72,865.12/x
  3. Step 3: Cross multiply
    131,988.64x = 198,086.64 × 72,865.12
  4. Step 4: Simplify right side
    131,988.64x = 14,433,606,794.00
  5. Step 5: Solve for x
    x = 14,433,606,794.00/131,988.64
  6. Step 6: Final answer
    x = 109,354.92

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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.