Home / 185,795.40-278,531.10-126,438.60

Finding the Fourth Proportional to 185,795.40, 278,531.10 and 126,438.60

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Solution

The fourth proportional to 185,795.40, 278,531.10 and 126,438.60 is: 189,547.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,795.40 : 278,531.10 = 126,438.60 : x
  2. Step 2: Convert to fraction form
    185,795.40/278,531.10 = 126,438.60/x
  3. Step 3: Cross multiply
    185,795.40x = 278,531.10 × 126,438.60
  4. Step 4: Simplify right side
    185,795.40x = 35,217,082,340.46
  5. Step 5: Solve for x
    x = 35,217,082,340.46/185,795.40
  6. Step 6: Final answer
    x = 189,547.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.