Home / 203,315.13-280,586.12-112,669.20

Finding the Fourth Proportional to 203,315.13, 280,586.12 and 112,669.20

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Solution

The fourth proportional to 203,315.13, 280,586.12 and 112,669.20 is: 155,489.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,315.13 : 280,586.12 = 112,669.20 : x
  2. Step 2: Convert to fraction form
    203,315.13/280,586.12 = 112,669.20/x
  3. Step 3: Cross multiply
    203,315.13x = 280,586.12 × 112,669.20
  4. Step 4: Simplify right side
    203,315.13x = 31,613,413,108.16
  5. Step 5: Solve for x
    x = 31,613,413,108.16/203,315.13
  6. Step 6: Final answer
    x = 155,489.72

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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.