Home / 230,529.52-318,132.13-128,561.43

Finding the Fourth Proportional to 230,529.52, 318,132.13 and 128,561.43

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Solution

The fourth proportional to 230,529.52, 318,132.13 and 128,561.43 is: 177,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,529.52 : 318,132.13 = 128,561.43 : x
  2. Step 2: Convert to fraction form
    230,529.52/318,132.13 = 128,561.43/x
  3. Step 3: Cross multiply
    230,529.52x = 318,132.13 × 128,561.43
  4. Step 4: Simplify right side
    230,529.52x = 40,899,521,561.75
  5. Step 5: Solve for x
    x = 40,899,521,561.75/230,529.52
  6. Step 6: Final answer
    x = 177,415.55

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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.