Home / 123,931.20-185,637.60-68,462.40

Finding the Fourth Proportional to 123,931.20, 185,637.60 and 68,462.40

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Solution

The fourth proportional to 123,931.20, 185,637.60 and 68,462.40 is: 102,550.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,931.20 : 185,637.60 = 68,462.40 : x
  2. Step 2: Convert to fraction form
    123,931.20/185,637.60 = 68,462.40/x
  3. Step 3: Cross multiply
    123,931.20x = 185,637.60 × 68,462.40
  4. Step 4: Simplify right side
    123,931.20x = 12,709,195,626.24
  5. Step 5: Solve for x
    x = 12,709,195,626.24/123,931.20
  6. Step 6: Final answer
    x = 102,550.41

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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.