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Finding the Fourth Proportional to 142,397.52, 213,492.60 and 68,439.12

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Solution

The fourth proportional to 142,397.52, 213,492.60 and 68,439.12 is: 102,608.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,397.52 : 213,492.60 = 68,439.12 : x
  2. Step 2: Convert to fraction form
    142,397.52/213,492.60 = 68,439.12/x
  3. Step 3: Cross multiply
    142,397.52x = 213,492.60 × 68,439.12
  4. Step 4: Simplify right side
    142,397.52x = 14,611,245,670.51
  5. Step 5: Solve for x
    x = 14,611,245,670.51/142,397.52
  6. Step 6: Final answer
    x = 102,608.85

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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.