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Finding the Fourth Proportional to 121,877.71, 168,120.76 and 73,446.60

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Solution

The fourth proportional to 121,877.71, 168,120.76 and 73,446.60 is: 101,313.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,877.71 : 168,120.76 = 73,446.60 : x
  2. Step 2: Convert to fraction form
    121,877.71/168,120.76 = 73,446.60/x
  3. Step 3: Cross multiply
    121,877.71x = 168,120.76 × 73,446.60
  4. Step 4: Simplify right side
    121,877.71x = 12,347,898,211.42
  5. Step 5: Solve for x
    x = 12,347,898,211.42/121,877.71
  6. Step 6: Final answer
    x = 101,313.84

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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.