Home / 180,960.20-249,713.31-100,387.52

Finding the Fourth Proportional to 180,960.20, 249,713.31 and 100,387.52

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Solution

The fourth proportional to 180,960.20, 249,713.31 and 100,387.52 is: 138,528.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,960.20 : 249,713.31 = 100,387.52 : x
  2. Step 2: Convert to fraction form
    180,960.20/249,713.31 = 100,387.52/x
  3. Step 3: Cross multiply
    180,960.20x = 249,713.31 × 100,387.52
  4. Step 4: Simplify right side
    180,960.20x = 25,068,099,901.89
  5. Step 5: Solve for x
    x = 25,068,099,901.89/180,960.20
  6. Step 6: Final answer
    x = 138,528.25

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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.