Home / 180,728.06-249,414.71-100,153.90

Finding the Fourth Proportional to 180,728.06, 249,414.71 and 100,153.90

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Solution

The fourth proportional to 180,728.06, 249,414.71 and 100,153.90 is: 138,217.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,728.06 : 249,414.71 = 100,153.90 : x
  2. Step 2: Convert to fraction form
    180,728.06/249,414.71 = 100,153.90/x
  3. Step 3: Cross multiply
    180,728.06x = 249,414.71 × 100,153.90
  4. Step 4: Simplify right side
    180,728.06x = 24,979,855,923.87
  5. Step 5: Solve for x
    x = 24,979,855,923.87/180,728.06
  6. Step 6: Final answer
    x = 138,217.92

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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.