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Finding the Fourth Proportional to 112,000.40, 168,000.60 and 103,446.80

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Solution

The fourth proportional to 112,000.40, 168,000.60 and 103,446.80 is: 155,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,000.40 : 168,000.60 = 103,446.80 : x
  2. Step 2: Convert to fraction form
    112,000.40/168,000.60 = 103,446.80/x
  3. Step 3: Cross multiply
    112,000.40x = 168,000.60 × 103,446.80
  4. Step 4: Simplify right side
    112,000.40x = 17,379,124,468.08
  5. Step 5: Solve for x
    x = 17,379,124,468.08/112,000.40
  6. Step 6: Final answer
    x = 155,170.20

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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.