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Finding the Fourth Proportional to 121,461.38, 167,616.99 and 67,749.87

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Solution

The fourth proportional to 121,461.38, 167,616.99 and 67,749.87 is: 93,494.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,461.38 : 167,616.99 = 67,749.87 : x
  2. Step 2: Convert to fraction form
    121,461.38/167,616.99 = 67,749.87/x
  3. Step 3: Cross multiply
    121,461.38x = 167,616.99 × 67,749.87
  4. Step 4: Simplify right side
    121,461.38x = 11,356,029,282.29
  5. Step 5: Solve for x
    x = 11,356,029,282.29/121,461.38
  6. Step 6: Final answer
    x = 93,494.98

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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.