Home / 123,722.20-185,972.10-121,389.40

Finding the Fourth Proportional to 123,722.20, 185,972.10 and 121,389.40

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Solution

The fourth proportional to 123,722.20, 185,972.10 and 121,389.40 is: 182,465.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,722.20 : 185,972.10 = 121,389.40 : x
  2. Step 2: Convert to fraction form
    123,722.20/185,972.10 = 121,389.40/x
  3. Step 3: Cross multiply
    123,722.20x = 185,972.10 × 121,389.40
  4. Step 4: Simplify right side
    123,722.20x = 22,575,041,635.74
  5. Step 5: Solve for x
    x = 22,575,041,635.74/123,722.20
  6. Step 6: Final answer
    x = 182,465.57

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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.