Home / 122,456.40-183,490.20-80,854.80

Finding the Fourth Proportional to 122,456.40, 183,490.20 and 80,854.80

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Solution

The fourth proportional to 122,456.40, 183,490.20 and 80,854.80 is: 121,153.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,456.40 : 183,490.20 = 80,854.80 : x
  2. Step 2: Convert to fraction form
    122,456.40/183,490.20 = 80,854.80/x
  3. Step 3: Cross multiply
    122,456.40x = 183,490.20 × 80,854.80
  4. Step 4: Simplify right side
    122,456.40x = 14,836,063,422.96
  5. Step 5: Solve for x
    x = 14,836,063,422.96/122,456.40
  6. Step 6: Final answer
    x = 121,153.84

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1.5x scale

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.