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Finding the Fourth Proportional to 90,951.16, 136,512.06 and 55,959.16

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Solution

The fourth proportional to 90,951.16, 136,512.06 and 55,959.16 is: 83,991.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,951.16 : 136,512.06 = 55,959.16 : x
  2. Step 2: Convert to fraction form
    90,951.16/136,512.06 = 55,959.16/x
  3. Step 3: Cross multiply
    90,951.16x = 136,512.06 × 55,959.16
  4. Step 4: Simplify right side
    90,951.16x = 7,639,100,207.47
  5. Step 5: Solve for x
    x = 7,639,100,207.47/90,951.16
  6. Step 6: Final answer
    x = 83,991.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.