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Finding the Fourth Proportional to 90,851.70, 136,301.85 and 64,607.70

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Solution

The fourth proportional to 90,851.70, 136,301.85 and 64,607.70 is: 96,928.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,851.70 : 136,301.85 = 64,607.70 : x
  2. Step 2: Convert to fraction form
    90,851.70/136,301.85 = 64,607.70/x
  3. Step 3: Cross multiply
    90,851.70x = 136,301.85 × 64,607.70
  4. Step 4: Simplify right side
    90,851.70x = 8,806,149,034.25
  5. Step 5: Solve for x
    x = 8,806,149,034.25/90,851.70
  6. Step 6: Final answer
    x = 96,928.83

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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.