Home / 121,287.60-167,389.20-67,581.36

Finding the Fourth Proportional to 121,287.60, 167,389.20 and 67,581.36

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Solution

The fourth proportional to 121,287.60, 167,389.20 and 67,581.36 is: 93,269.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,287.60 : 167,389.20 = 67,581.36 : x
  2. Step 2: Convert to fraction form
    121,287.60/167,389.20 = 67,581.36/x
  3. Step 3: Cross multiply
    121,287.60x = 167,389.20 × 67,581.36
  4. Step 4: Simplify right side
    121,287.60x = 11,312,389,785.31
  5. Step 5: Solve for x
    x = 11,312,389,785.31/121,287.60
  6. Step 6: Final answer
    x = 93,269.14

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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.