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Finding the Fourth Proportional to 121,390.92, 167,516.22 and 70,400.46

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Solution

The fourth proportional to 121,390.92, 167,516.22 and 70,400.46 is: 97,150.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,390.92 : 167,516.22 = 70,400.46 : x
  2. Step 2: Convert to fraction form
    121,390.92/167,516.22 = 70,400.46/x
  3. Step 3: Cross multiply
    121,390.92x = 167,516.22 × 70,400.46
  4. Step 4: Simplify right side
    121,390.92x = 11,793,218,945.46
  5. Step 5: Solve for x
    x = 11,793,218,945.46/121,390.92
  6. Step 6: Final answer
    x = 97,150.75

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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.