Home / 130,686.78-180,319.86-76,952.16

Finding the Fourth Proportional to 130,686.78, 180,319.86 and 76,952.16

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Solution

The fourth proportional to 130,686.78, 180,319.86 and 76,952.16 is: 106,177.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,686.78 : 180,319.86 = 76,952.16 : x
  2. Step 2: Convert to fraction form
    130,686.78/180,319.86 = 76,952.16/x
  3. Step 3: Cross multiply
    130,686.78x = 180,319.86 × 76,952.16
  4. Step 4: Simplify right side
    130,686.78x = 13,876,002,717.90
  5. Step 5: Solve for x
    x = 13,876,002,717.90/130,686.78
  6. Step 6: Final answer
    x = 106,177.55

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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.