Home / 121,503.40-167,425.86-89,621.80

Finding the Fourth Proportional to 121,503.40, 167,425.86 and 89,621.80

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Solution

The fourth proportional to 121,503.40, 167,425.86 and 89,621.80 is: 123,494.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,503.40 : 167,425.86 = 89,621.80 : x
  2. Step 2: Convert to fraction form
    121,503.40/167,425.86 = 89,621.80/x
  3. Step 3: Cross multiply
    121,503.40x = 167,425.86 × 89,621.80
  4. Step 4: Simplify right side
    121,503.40x = 15,005,006,939.75
  5. Step 5: Solve for x
    x = 15,005,006,939.75/121,503.40
  6. Step 6: Final answer
    x = 123,494.54

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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.