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Finding the Fourth Proportional to 101,291.52, 151,937.60 and 31,170.40

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Solution

The fourth proportional to 101,291.52, 151,937.60 and 31,170.40 is: 46,755.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,291.52 : 151,937.60 = 31,170.40 : x
  2. Step 2: Convert to fraction form
    101,291.52/151,937.60 = 31,170.40/x
  3. Step 3: Cross multiply
    101,291.52x = 151,937.60 × 31,170.40
  4. Step 4: Simplify right side
    101,291.52x = 4,735,955,767.04
  5. Step 5: Solve for x
    x = 4,735,955,767.04/101,291.52
  6. Step 6: Final answer
    x = 46,755.70

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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.