Home / 127,321.20-175,637.34-86,487.42

Finding the Fourth Proportional to 127,321.20, 175,637.34 and 86,487.42

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Solution

The fourth proportional to 127,321.20, 175,637.34 and 86,487.42 is: 119,307.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,321.20 : 175,637.34 = 86,487.42 : x
  2. Step 2: Convert to fraction form
    127,321.20/175,637.34 = 86,487.42/x
  3. Step 3: Cross multiply
    127,321.20x = 175,637.34 × 86,487.42
  4. Step 4: Simplify right side
    127,321.20x = 15,190,420,392.26
  5. Step 5: Solve for x
    x = 15,190,420,392.26/127,321.20
  6. Step 6: Final answer
    x = 119,307.86

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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.