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Finding the Fourth Proportional to 153,937.92, 230,915.84 and 43,138.56

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Solution

The fourth proportional to 153,937.92, 230,915.84 and 43,138.56 is: 64,710.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,937.92 : 230,915.84 = 43,138.56 : x
  2. Step 2: Convert to fraction form
    153,937.92/230,915.84 = 43,138.56/x
  3. Step 3: Cross multiply
    153,937.92x = 230,915.84 × 43,138.56
  4. Step 4: Simplify right side
    153,937.92x = 9,961,376,818.79
  5. Step 5: Solve for x
    x = 9,961,376,818.79/153,937.92
  6. Step 6: Final answer
    x = 64,710.35

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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.