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Finding the Fourth Proportional to 112,468.40, 168,508.20 and 73,005.20

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Solution

The fourth proportional to 112,468.40, 168,508.20 and 73,005.20 is: 109,381.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,468.40 : 168,508.20 = 73,005.20 : x
  2. Step 2: Convert to fraction form
    112,468.40/168,508.20 = 73,005.20/x
  3. Step 3: Cross multiply
    112,468.40x = 168,508.20 × 73,005.20
  4. Step 4: Simplify right side
    112,468.40x = 12,301,974,842.64
  5. Step 5: Solve for x
    x = 12,301,974,842.64/112,468.40
  6. Step 6: Final answer
    x = 109,381.61

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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.