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Finding the Fourth Proportional to 120,833.60, 181,250.40 and 78,843.20

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Solution

The fourth proportional to 120,833.60, 181,250.40 and 78,843.20 is: 118,264.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,833.60 : 181,250.40 = 78,843.20 : x
  2. Step 2: Convert to fraction form
    120,833.60/181,250.40 = 78,843.20/x
  3. Step 3: Cross multiply
    120,833.60x = 181,250.40 × 78,843.20
  4. Step 4: Simplify right side
    120,833.60x = 14,290,361,537.28
  5. Step 5: Solve for x
    x = 14,290,361,537.28/120,833.60
  6. Step 6: Final answer
    x = 118,264.80

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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.