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Finding the Fourth Proportional to 169,793.40, 254,690.10 and 81,001.20

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Solution

The fourth proportional to 169,793.40, 254,690.10 and 81,001.20 is: 121,501.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,793.40 : 254,690.10 = 81,001.20 : x
  2. Step 2: Convert to fraction form
    169,793.40/254,690.10 = 81,001.20/x
  3. Step 3: Cross multiply
    169,793.40x = 254,690.10 × 81,001.20
  4. Step 4: Simplify right side
    169,793.40x = 20,630,203,728.12
  5. Step 5: Solve for x
    x = 20,630,203,728.12/169,793.40
  6. Step 6: Final answer
    x = 121,501.80

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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.