Home / 130,612.72-180,078.69-84,591.06

Finding the Fourth Proportional to 130,612.72, 180,078.69 and 84,591.06

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Solution

The fourth proportional to 130,612.72, 180,078.69 and 84,591.06 is: 116,627.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,612.72 : 180,078.69 = 84,591.06 : x
  2. Step 2: Convert to fraction form
    130,612.72/180,078.69 = 84,591.06/x
  3. Step 3: Cross multiply
    130,612.72x = 180,078.69 × 84,591.06
  4. Step 4: Simplify right side
    130,612.72x = 15,233,046,436.61
  5. Step 5: Solve for x
    x = 15,233,046,436.61/130,612.72
  6. Step 6: Final answer
    x = 116,627.59

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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.