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Finding the Fourth Proportional to 121,980.95, 168,337.49 and 68,265.84

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Solution

The fourth proportional to 121,980.95, 168,337.49 and 68,265.84 is: 94,208.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,980.95 : 168,337.49 = 68,265.84 : x
  2. Step 2: Convert to fraction form
    121,980.95/168,337.49 = 68,265.84/x
  3. Step 3: Cross multiply
    121,980.95x = 168,337.49 × 68,265.84
  4. Step 4: Simplify right side
    121,980.95x = 11,491,699,885.38
  5. Step 5: Solve for x
    x = 11,491,699,885.38/121,980.95
  6. Step 6: Final answer
    x = 94,208.97

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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.