Home / 121,496.40-167,416.20-89,614.80

Finding the Fourth Proportional to 121,496.40, 167,416.20 and 89,614.80

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Solution

The fourth proportional to 121,496.40, 167,416.20 and 89,614.80 is: 123,484.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,496.40 : 167,416.20 = 89,614.80 : x
  2. Step 2: Convert to fraction form
    121,496.40/167,416.20 = 89,614.80/x
  3. Step 3: Cross multiply
    121,496.40x = 167,416.20 × 89,614.80
  4. Step 4: Simplify right side
    121,496.40x = 15,002,969,279.76
  5. Step 5: Solve for x
    x = 15,002,969,279.76/121,496.40
  6. Step 6: Final answer
    x = 123,484.89

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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.