Home / 90,735.39-136,114.02-38,138.04

Finding the Fourth Proportional to 90,735.39, 136,114.02 and 38,138.04

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Solution

The fourth proportional to 90,735.39, 136,114.02 and 38,138.04 is: 57,211.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,735.39 : 136,114.02 = 38,138.04 : x
  2. Step 2: Convert to fraction form
    90,735.39/136,114.02 = 38,138.04/x
  3. Step 3: Cross multiply
    90,735.39x = 136,114.02 × 38,138.04
  4. Step 4: Simplify right side
    90,735.39x = 5,191,121,939.32
  5. Step 5: Solve for x
    x = 5,191,121,939.32/90,735.39
  6. Step 6: Final answer
    x = 57,211.66

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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.