Home / 235,861.14-325,488.12-128,431.92

Finding the Fourth Proportional to 235,861.14, 325,488.12 and 128,431.92

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Solution

The fourth proportional to 235,861.14, 325,488.12 and 128,431.92 is: 177,235.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,861.14 : 325,488.12 = 128,431.92 : x
  2. Step 2: Convert to fraction form
    235,861.14/325,488.12 = 128,431.92/x
  3. Step 3: Cross multiply
    235,861.14x = 325,488.12 × 128,431.92
  4. Step 4: Simplify right side
    235,861.14x = 41,803,064,188.79
  5. Step 5: Solve for x
    x = 41,803,064,188.79/235,861.14
  6. Step 6: Final answer
    x = 177,235.91

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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.