Home / 127,487.27-175,972.55-87,185.72

Finding the Fourth Proportional to 127,487.27, 175,972.55 and 87,185.72

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Solution

The fourth proportional to 127,487.27, 175,972.55 and 87,185.72 is: 120,343.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,487.27 : 175,972.55 = 87,185.72 : x
  2. Step 2: Convert to fraction form
    127,487.27/175,972.55 = 87,185.72/x
  3. Step 3: Cross multiply
    127,487.27x = 175,972.55 × 87,185.72
  4. Step 4: Simplify right side
    127,487.27x = 15,342,292,156.19
  5. Step 5: Solve for x
    x = 15,342,292,156.19/127,487.27
  6. Step 6: Final answer
    x = 120,343.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.