Home / 209,022.57-288,475.70-124,139.61

Finding the Fourth Proportional to 209,022.57, 288,475.70 and 124,139.61

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Solution

The fourth proportional to 209,022.57, 288,475.70 and 124,139.61 is: 171,327.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,022.57 : 288,475.70 = 124,139.61 : x
  2. Step 2: Convert to fraction form
    209,022.57/288,475.70 = 124,139.61/x
  3. Step 3: Cross multiply
    209,022.57x = 288,475.70 × 124,139.61
  4. Step 4: Simplify right side
    209,022.57x = 35,811,260,271.78
  5. Step 5: Solve for x
    x = 35,811,260,271.78/209,022.57
  6. Step 6: Final answer
    x = 171,327.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.