Home / 230,738.11-318,417.98-128,762.46

Finding the Fourth Proportional to 230,738.11, 318,417.98 and 128,762.46

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Solution

The fourth proportional to 230,738.11, 318,417.98 and 128,762.46 is: 177,691.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,738.11 : 318,417.98 = 128,762.46 : x
  2. Step 2: Convert to fraction form
    230,738.11/318,417.98 = 128,762.46/x
  3. Step 3: Cross multiply
    230,738.11x = 318,417.98 × 128,762.46
  4. Step 4: Simplify right side
    230,738.11x = 41,000,281,769.22
  5. Step 5: Solve for x
    x = 41,000,281,769.22/230,738.11
  6. Step 6: Final answer
    x = 177,691.85

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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.