Home / 124,438.40-186,657.60-68,256.80

Finding the Fourth Proportional to 124,438.40, 186,657.60 and 68,256.80

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Solution

The fourth proportional to 124,438.40, 186,657.60 and 68,256.80 is: 102,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,438.40 : 186,657.60 = 68,256.80 : x
  2. Step 2: Convert to fraction form
    124,438.40/186,657.60 = 68,256.80/x
  3. Step 3: Cross multiply
    124,438.40x = 186,657.60 × 68,256.80
  4. Step 4: Simplify right side
    124,438.40x = 12,740,650,471.68
  5. Step 5: Solve for x
    x = 12,740,650,471.68/124,438.40
  6. Step 6: Final answer
    x = 102,385.20

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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.