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Finding the Fourth Proportional to 121,453.30, 167,605.78 and 67,741.78

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Solution

The fourth proportional to 121,453.30, 167,605.78 and 67,741.78 is: 93,483.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,453.30 : 167,605.78 = 67,741.78 : x
  2. Step 2: Convert to fraction form
    121,453.30/167,605.78 = 67,741.78/x
  3. Step 3: Cross multiply
    121,453.30x = 167,605.78 × 67,741.78
  4. Step 4: Simplify right side
    121,453.30x = 11,353,913,728.40
  5. Step 5: Solve for x
    x = 11,353,913,728.40/121,453.30
  6. Step 6: Final answer
    x = 93,483.78

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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.