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Finding the Fourth Proportional to 121,253.76, 167,254.08 and 83,462.40

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Solution

The fourth proportional to 121,253.76, 167,254.08 and 83,462.40 is: 115,125.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,253.76 : 167,254.08 = 83,462.40 : x
  2. Step 2: Convert to fraction form
    121,253.76/167,254.08 = 83,462.40/x
  3. Step 3: Cross multiply
    121,253.76x = 167,254.08 × 83,462.40
  4. Step 4: Simplify right side
    121,253.76x = 13,959,426,926.59
  5. Step 5: Solve for x
    x = 13,959,426,926.59/121,253.76
  6. Step 6: Final answer
    x = 115,125.72

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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.