Home / 121,138.83-166,615.25-97,213.05

Finding the Fourth Proportional to 121,138.83, 166,615.25 and 97,213.05

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Solution

The fourth proportional to 121,138.83, 166,615.25 and 97,213.05 is: 133,707.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,138.83 : 166,615.25 = 97,213.05 : x
  2. Step 2: Convert to fraction form
    121,138.83/166,615.25 = 97,213.05/x
  3. Step 3: Cross multiply
    121,138.83x = 166,615.25 × 97,213.05
  4. Step 4: Simplify right side
    121,138.83x = 16,197,176,142.95
  5. Step 5: Solve for x
    x = 16,197,176,142.95/121,138.83
  6. Step 6: Final answer
    x = 133,707.55

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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.