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Finding the Fourth Proportional to 127,254.60, 175,530.63 and 78,174.72

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Solution

The fourth proportional to 127,254.60, 175,530.63 and 78,174.72 is: 107,831.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,254.60 : 175,530.63 = 78,174.72 : x
  2. Step 2: Convert to fraction form
    127,254.60/175,530.63 = 78,174.72/x
  3. Step 3: Cross multiply
    127,254.60x = 175,530.63 × 78,174.72
  4. Step 4: Simplify right side
    127,254.60x = 13,722,057,851.67
  5. Step 5: Solve for x
    x = 13,722,057,851.67/127,254.60
  6. Step 6: Final answer
    x = 107,831.53

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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.