Home / 127,129.13-175,438.19-70,549.61

Finding the Fourth Proportional to 127,129.13, 175,438.19 and 70,549.61

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Solution

The fourth proportional to 127,129.13, 175,438.19 and 70,549.61 is: 97,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,129.13 : 175,438.19 = 70,549.61 : x
  2. Step 2: Convert to fraction form
    127,129.13/175,438.19 = 70,549.61/x
  3. Step 3: Cross multiply
    127,129.13x = 175,438.19 × 70,549.61
  4. Step 4: Simplify right side
    127,129.13x = 12,377,095,182.79
  5. Step 5: Solve for x
    x = 12,377,095,182.79/127,129.13
  6. Step 6: Final answer
    x = 97,358.45

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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.