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Finding the Fourth Proportional to 121,386.16, 167,525.16 and 67,679.92

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Solution

The fourth proportional to 121,386.16, 167,525.16 and 67,679.92 is: 93,405.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,386.16 : 167,525.16 = 67,679.92 : x
  2. Step 2: Convert to fraction form
    121,386.16/167,525.16 = 67,679.92/x
  3. Step 3: Cross multiply
    121,386.16x = 167,525.16 × 67,679.92
  4. Step 4: Simplify right side
    121,386.16x = 11,338,089,426.79
  5. Step 5: Solve for x
    x = 11,338,089,426.79/121,386.16
  6. Step 6: Final answer
    x = 93,405.12

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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.