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Finding the Fourth Proportional to 153,987.52, 231,003.16 and 47,380.32

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Solution

The fourth proportional to 153,987.52, 231,003.16 and 47,380.32 is: 71,077.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,987.52 : 231,003.16 = 47,380.32 : x
  2. Step 2: Convert to fraction form
    153,987.52/231,003.16 = 47,380.32/x
  3. Step 3: Cross multiply
    153,987.52x = 231,003.16 × 47,380.32
  4. Step 4: Simplify right side
    153,987.52x = 10,945,003,641.81
  5. Step 5: Solve for x
    x = 10,945,003,641.81/153,987.52
  6. Step 6: Final answer
    x = 71,077.21

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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.