Home / 180,965.28-249,732.72-100,394.40

Finding the Fourth Proportional to 180,965.28, 249,732.72 and 100,394.40

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Solution

The fourth proportional to 180,965.28, 249,732.72 and 100,394.40 is: 138,544.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,965.28 : 249,732.72 = 100,394.40 : x
  2. Step 2: Convert to fraction form
    180,965.28/249,732.72 = 100,394.40/x
  3. Step 3: Cross multiply
    180,965.28x = 249,732.72 × 100,394.40
  4. Step 4: Simplify right side
    180,965.28x = 25,071,766,584.77
  5. Step 5: Solve for x
    x = 25,071,766,584.77/180,965.28
  6. Step 6: Final answer
    x = 138,544.62

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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.