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Finding the Fourth Proportional to 121,678.40, 182,486.79 and 36,269.55

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Solution

The fourth proportional to 121,678.40, 182,486.79 and 36,269.55 is: 54,395.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,678.40 : 182,486.79 = 36,269.55 : x
  2. Step 2: Convert to fraction form
    121,678.40/182,486.79 = 36,269.55/x
  3. Step 3: Cross multiply
    121,678.40x = 182,486.79 × 36,269.55
  4. Step 4: Simplify right side
    121,678.40x = 6,618,713,298.03
  5. Step 5: Solve for x
    x = 6,618,713,298.03/121,678.40
  6. Step 6: Final answer
    x = 54,395.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.