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Finding the Fourth Proportional to 112,663.80, 168,995.70 and 71,294.20

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Solution

The fourth proportional to 112,663.80, 168,995.70 and 71,294.20 is: 106,941.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,663.80 : 168,995.70 = 71,294.20 : x
  2. Step 2: Convert to fraction form
    112,663.80/168,995.70 = 71,294.20/x
  3. Step 3: Cross multiply
    112,663.80x = 168,995.70 × 71,294.20
  4. Step 4: Simplify right side
    112,663.80x = 12,048,413,234.94
  5. Step 5: Solve for x
    x = 12,048,413,234.94/112,663.80
  6. Step 6: Final answer
    x = 106,941.30

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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.