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Finding the Fourth Proportional to 121,414.80, 167,572.60 and 70,457.70

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Solution

The fourth proportional to 121,414.80, 167,572.60 and 70,457.70 is: 97,243.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,414.80 : 167,572.60 = 70,457.70 : x
  2. Step 2: Convert to fraction form
    121,414.80/167,572.60 = 70,457.70/x
  3. Step 3: Cross multiply
    121,414.80x = 167,572.60 × 70,457.70
  4. Step 4: Simplify right side
    121,414.80x = 11,806,779,979.02
  5. Step 5: Solve for x
    x = 11,806,779,979.02/121,414.80
  6. Step 6: Final answer
    x = 97,243.33

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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.