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Finding the Fourth Proportional to 121,191.61, 167,242.43 and 70,899.13

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Solution

The fourth proportional to 121,191.61, 167,242.43 and 70,899.13 is: 97,839.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,191.61 : 167,242.43 = 70,899.13 : x
  2. Step 2: Convert to fraction form
    121,191.61/167,242.43 = 70,899.13/x
  3. Step 3: Cross multiply
    121,191.61x = 167,242.43 × 70,899.13
  4. Step 4: Simplify right side
    121,191.61x = 11,857,342,431.59
  5. Step 5: Solve for x
    x = 11,857,342,431.59/121,191.61
  6. Step 6: Final answer
    x = 97,839.63

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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.