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Finding the Fourth Proportional to 121,176.79, 167,115.10 and 75,858.90

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Solution

The fourth proportional to 121,176.79, 167,115.10 and 75,858.90 is: 104,617.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,176.79 : 167,115.10 = 75,858.90 : x
  2. Step 2: Convert to fraction form
    121,176.79/167,115.10 = 75,858.90/x
  3. Step 3: Cross multiply
    121,176.79x = 167,115.10 × 75,858.90
  4. Step 4: Simplify right side
    121,176.79x = 12,677,167,659.39
  5. Step 5: Solve for x
    x = 12,677,167,659.39/121,176.79
  6. Step 6: Final answer
    x = 104,617.13

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1.5x scale

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.