Home / 121,384.90-182,172.60-84,206.56

Finding the Fourth Proportional to 121,384.90, 182,172.60 and 84,206.56

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Solution

The fourth proportional to 121,384.90, 182,172.60 and 84,206.56 is: 126,375.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,384.90 : 182,172.60 = 84,206.56 : x
  2. Step 2: Convert to fraction form
    121,384.90/182,172.60 = 84,206.56/x
  3. Step 3: Cross multiply
    121,384.90x = 182,172.60 × 84,206.56
  4. Step 4: Simplify right side
    121,384.90x = 15,340,127,972.26
  5. Step 5: Solve for x
    x = 15,340,127,972.26/121,384.90
  6. Step 6: Final answer
    x = 126,375.92

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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.