Home / 230,731.13-318,408.37-128,750.51

Finding the Fourth Proportional to 230,731.13, 318,408.37 and 128,750.51

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Solution

The fourth proportional to 230,731.13, 318,408.37 and 128,750.51 is: 177,675.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,731.13 : 318,408.37 = 128,750.51 : x
  2. Step 2: Convert to fraction form
    230,731.13/318,408.37 = 128,750.51/x
  3. Step 3: Cross multiply
    230,731.13x = 318,408.37 × 128,750.51
  4. Step 4: Simplify right side
    230,731.13x = 40,995,240,499.91
  5. Step 5: Solve for x
    x = 40,995,240,499.91/230,731.13
  6. Step 6: Final answer
    x = 177,675.38

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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.