Home / 127,102.60-175,328.71-79,272.91

Finding the Fourth Proportional to 127,102.60, 175,328.71 and 79,272.91

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Solution

The fourth proportional to 127,102.60, 175,328.71 and 79,272.91 is: 109,351.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,102.60 : 175,328.71 = 79,272.91 : x
  2. Step 2: Convert to fraction form
    127,102.60/175,328.71 = 79,272.91/x
  3. Step 3: Cross multiply
    127,102.60x = 175,328.71 × 79,272.91
  4. Step 4: Simplify right side
    127,102.60x = 13,898,817,048.25
  5. Step 5: Solve for x
    x = 13,898,817,048.25/127,102.60
  6. Step 6: Final answer
    x = 109,351.16

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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.