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Finding the Fourth Proportional to 172,686.60, 259,613.10 and 147,025.80

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Solution

The fourth proportional to 172,686.60, 259,613.10 and 147,025.80 is: 221,035.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,686.60 : 259,613.10 = 147,025.80 : x
  2. Step 2: Convert to fraction form
    172,686.60/259,613.10 = 147,025.80/x
  3. Step 3: Cross multiply
    172,686.60x = 259,613.10 × 147,025.80
  4. Step 4: Simplify right side
    172,686.60x = 38,169,823,717.98
  5. Step 5: Solve for x
    x = 38,169,823,717.98/172,686.60
  6. Step 6: Final answer
    x = 221,035.24

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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.