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Finding the Fourth Proportional to 129,915.90, 182,144.70 and 129,915.90

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Solution

The fourth proportional to 129,915.90, 182,144.70 and 129,915.90 is: 182,144.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,915.90 : 182,144.70 = 129,915.90 : x
  2. Step 2: Convert to fraction form
    129,915.90/182,144.70 = 129,915.90/x
  3. Step 3: Cross multiply
    129,915.90x = 182,144.70 × 129,915.90
  4. Step 4: Simplify right side
    129,915.90x = 23,663,492,630.73
  5. Step 5: Solve for x
    x = 23,663,492,630.73/129,915.90
  6. Step 6: Final answer
    x = 182,144.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.