Home / 130,512.38-180,103.38-76,785.08

Finding the Fourth Proportional to 130,512.38, 180,103.38 and 76,785.08

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Solution

The fourth proportional to 130,512.38, 180,103.38 and 76,785.08 is: 105,961.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,512.38 : 180,103.38 = 76,785.08 : x
  2. Step 2: Convert to fraction form
    130,512.38/180,103.38 = 76,785.08/x
  3. Step 3: Cross multiply
    130,512.38x = 180,103.38 × 76,785.08
  4. Step 4: Simplify right side
    130,512.38x = 13,829,252,441.57
  5. Step 5: Solve for x
    x = 13,829,252,441.57/130,512.38
  6. Step 6: Final answer
    x = 105,961.23

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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.