Home / 124,434.20-186,213.90-86,817.80

Finding the Fourth Proportional to 124,434.20, 186,213.90 and 86,817.80

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Solution

The fourth proportional to 124,434.20, 186,213.90 and 86,817.80 is: 129,921.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,434.20 : 186,213.90 = 86,817.80 : x
  2. Step 2: Convert to fraction form
    124,434.20/186,213.90 = 86,817.80/x
  3. Step 3: Cross multiply
    124,434.20x = 186,213.90 × 86,817.80
  4. Step 4: Simplify right side
    124,434.20x = 16,166,681,127.42
  5. Step 5: Solve for x
    x = 16,166,681,127.42/124,434.20
  6. Step 6: Final answer
    x = 129,921.53

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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.