Home / 127,921.05-176,562.69-87,152.64

Finding the Fourth Proportional to 127,921.05, 176,562.69 and 87,152.64

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Solution

The fourth proportional to 127,921.05, 176,562.69 and 87,152.64 is: 120,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,921.05 : 176,562.69 = 87,152.64 : x
  2. Step 2: Convert to fraction form
    127,921.05/176,562.69 = 87,152.64/x
  3. Step 3: Cross multiply
    127,921.05x = 176,562.69 × 87,152.64
  4. Step 4: Simplify right side
    127,921.05x = 15,387,904,559.00
  5. Step 5: Solve for x
    x = 15,387,904,559.00/127,921.05
  6. Step 6: Final answer
    x = 120,292.20

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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.