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Finding the Fourth Proportional to 170,016.60, 255,024.90 and 139,949.40

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Solution

The fourth proportional to 170,016.60, 255,024.90 and 139,949.40 is: 209,924.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,016.60 : 255,024.90 = 139,949.40 : x
  2. Step 2: Convert to fraction form
    170,016.60/255,024.90 = 139,949.40/x
  3. Step 3: Cross multiply
    170,016.60x = 255,024.90 × 139,949.40
  4. Step 4: Simplify right side
    170,016.60x = 35,690,581,740.06
  5. Step 5: Solve for x
    x = 35,690,581,740.06/170,016.60
  6. Step 6: Final answer
    x = 209,924.10

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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.