Home / 217,502.10-300,137.55-120,711.18

Finding the Fourth Proportional to 217,502.10, 300,137.55 and 120,711.18

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Solution

The fourth proportional to 217,502.10, 300,137.55 and 120,711.18 is: 166,572.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,502.10 : 300,137.55 = 120,711.18 : x
  2. Step 2: Convert to fraction form
    217,502.10/300,137.55 = 120,711.18/x
  3. Step 3: Cross multiply
    217,502.10x = 300,137.55 × 120,711.18
  4. Step 4: Simplify right side
    217,502.10x = 36,229,957,822.81
  5. Step 5: Solve for x
    x = 36,229,957,822.81/217,502.10
  6. Step 6: Final answer
    x = 166,572.91

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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.