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Finding the Fourth Proportional to 122,613.92, 183,915.78 and 42,670.20

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Solution

The fourth proportional to 122,613.92, 183,915.78 and 42,670.20 is: 64,003.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,613.92 : 183,915.78 = 42,670.20 : x
  2. Step 2: Convert to fraction form
    122,613.92/183,915.78 = 42,670.20/x
  3. Step 3: Cross multiply
    122,613.92x = 183,915.78 × 42,670.20
  4. Step 4: Simplify right side
    122,613.92x = 7,847,723,115.76
  5. Step 5: Solve for x
    x = 7,847,723,115.76/122,613.92
  6. Step 6: Final answer
    x = 64,003.53

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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.