Home / 124,989.20-172,484.28-68,400.40

Finding the Fourth Proportional to 124,989.20, 172,484.28 and 68,400.40

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Solution

The fourth proportional to 124,989.20, 172,484.28 and 68,400.40 is: 94,392.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,989.20 : 172,484.28 = 68,400.40 : x
  2. Step 2: Convert to fraction form
    124,989.20/172,484.28 = 68,400.40/x
  3. Step 3: Cross multiply
    124,989.20x = 172,484.28 × 68,400.40
  4. Step 4: Simplify right side
    124,989.20x = 11,797,993,745.71
  5. Step 5: Solve for x
    x = 11,797,993,745.71/124,989.20
  6. Step 6: Final answer
    x = 94,392.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.