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Finding the Fourth Proportional to 130,612.77, 180,078.76 and 84,591.10

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Solution

The fourth proportional to 130,612.77, 180,078.76 and 84,591.10 is: 116,627.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,612.77 : 180,078.76 = 84,591.10 : x
  2. Step 2: Convert to fraction form
    130,612.77/180,078.76 = 84,591.10/x
  3. Step 3: Cross multiply
    130,612.77x = 180,078.76 × 84,591.10
  4. Step 4: Simplify right side
    130,612.77x = 15,233,059,733.36
  5. Step 5: Solve for x
    x = 15,233,059,733.36/130,612.77
  6. Step 6: Final answer
    x = 116,627.64

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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.