Home / 212,770.40-319,155.60-129,826.40

Finding the Fourth Proportional to 212,770.40, 319,155.60 and 129,826.40

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Solution

The fourth proportional to 212,770.40, 319,155.60 and 129,826.40 is: 194,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,770.40 : 319,155.60 = 129,826.40 : x
  2. Step 2: Convert to fraction form
    212,770.40/319,155.60 = 129,826.40/x
  3. Step 3: Cross multiply
    212,770.40x = 319,155.60 × 129,826.40
  4. Step 4: Simplify right side
    212,770.40x = 41,434,822,587.84
  5. Step 5: Solve for x
    x = 41,434,822,587.84/212,770.40
  6. Step 6: Final answer
    x = 194,739.60

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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.