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Finding the Fourth Proportional to 123,630.50, 170,611.16 and 67,041.88

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Solution

The fourth proportional to 123,630.50, 170,611.16 and 67,041.88 is: 92,518.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,630.50 : 170,611.16 = 67,041.88 : x
  2. Step 2: Convert to fraction form
    123,630.50/170,611.16 = 67,041.88/x
  3. Step 3: Cross multiply
    123,630.50x = 170,611.16 × 67,041.88
  4. Step 4: Simplify right side
    123,630.50x = 11,438,092,915.38
  5. Step 5: Solve for x
    x = 11,438,092,915.38/123,630.50
  6. Step 6: Final answer
    x = 92,518.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.