Home / 127,258.32-175,535.72-78,178.44

Finding the Fourth Proportional to 127,258.32, 175,535.72 and 78,178.44

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Solution

The fourth proportional to 127,258.32, 175,535.72 and 78,178.44 is: 107,836.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,258.32 : 175,535.72 = 78,178.44 : x
  2. Step 2: Convert to fraction form
    127,258.32/175,535.72 = 78,178.44/x
  3. Step 3: Cross multiply
    127,258.32x = 175,535.72 × 78,178.44
  4. Step 4: Simplify right side
    127,258.32x = 13,723,108,753.88
  5. Step 5: Solve for x
    x = 13,723,108,753.88/127,258.32
  6. Step 6: Final answer
    x = 107,836.63

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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.