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Finding the Fourth Proportional to 121,989.59, 182,991.57 and 47,110.13

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Solution

The fourth proportional to 121,989.59, 182,991.57 and 47,110.13 is: 70,667.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,989.59 : 182,991.57 = 47,110.13 : x
  2. Step 2: Convert to fraction form
    121,989.59/182,991.57 = 47,110.13/x
  3. Step 3: Cross multiply
    121,989.59x = 182,991.57 × 47,110.13
  4. Step 4: Simplify right side
    121,989.59x = 8,620,756,246.20
  5. Step 5: Solve for x
    x = 8,620,756,246.20/121,989.59
  6. Step 6: Final answer
    x = 70,667.96

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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.