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Finding the Fourth Proportional to 121,408.80, 167,538.48 and 67,699.68

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Solution

The fourth proportional to 121,408.80, 167,538.48 and 67,699.68 is: 93,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,408.80 : 167,538.48 = 67,699.68 : x
  2. Step 2: Convert to fraction form
    121,408.80/167,538.48 = 67,699.68/x
  3. Step 3: Cross multiply
    121,408.80x = 167,538.48 × 67,699.68
  4. Step 4: Simplify right side
    121,408.80x = 11,342,301,483.69
  5. Step 5: Solve for x
    x = 11,342,301,483.69/121,408.80
  6. Step 6: Final answer
    x = 93,422.40

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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.