Home / 170,015.10-255,022.65-139,947.90

Finding the Fourth Proportional to 170,015.10, 255,022.65 and 139,947.90

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Solution

The fourth proportional to 170,015.10, 255,022.65 and 139,947.90 is: 209,921.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,015.10 : 255,022.65 = 139,947.90 : x
  2. Step 2: Convert to fraction form
    170,015.10/255,022.65 = 139,947.90/x
  3. Step 3: Cross multiply
    170,015.10x = 255,022.65 × 139,947.90
  4. Step 4: Simplify right side
    170,015.10x = 35,689,884,319.94
  5. Step 5: Solve for x
    x = 35,689,884,319.94/170,015.10
  6. Step 6: Final answer
    x = 209,921.85

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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.