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Finding the Fourth Proportional to 121,373.60, 167,504.68 and 70,385.88

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Solution

The fourth proportional to 121,373.60, 167,504.68 and 70,385.88 is: 97,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,373.60 : 167,504.68 = 70,385.88 : x
  2. Step 2: Convert to fraction form
    121,373.60/167,504.68 = 70,385.88/x
  3. Step 3: Cross multiply
    121,373.60x = 167,504.68 × 70,385.88
  4. Step 4: Simplify right side
    121,373.60x = 11,789,964,900.64
  5. Step 5: Solve for x
    x = 11,789,964,900.64/121,373.60
  6. Step 6: Final answer
    x = 97,137.81

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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.