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Finding the Fourth Proportional to 121,045.60, 167,047.68 and 73,271.92

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Solution

The fourth proportional to 121,045.60, 167,047.68 and 73,271.92 is: 101,118.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,045.60 : 167,047.68 = 73,271.92 : x
  2. Step 2: Convert to fraction form
    121,045.60/167,047.68 = 73,271.92/x
  3. Step 3: Cross multiply
    121,045.60x = 167,047.68 × 73,271.92
  4. Step 4: Simplify right side
    121,045.60x = 12,239,904,245.15
  5. Step 5: Solve for x
    x = 12,239,904,245.15/121,045.60
  6. Step 6: Final answer
    x = 101,118.13

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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.