Home / 180,781.29-249,451.98-100,208.79

Finding the Fourth Proportional to 180,781.29, 249,451.98 and 100,208.79

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Solution

The fourth proportional to 180,781.29, 249,451.98 and 100,208.79 is: 138,273.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,781.29 : 249,451.98 = 100,208.79 : x
  2. Step 2: Convert to fraction form
    180,781.29/249,451.98 = 100,208.79/x
  3. Step 3: Cross multiply
    180,781.29x = 249,451.98 × 100,208.79
  4. Step 4: Simplify right side
    180,781.29x = 24,997,281,078.90
  5. Step 5: Solve for x
    x = 24,997,281,078.90/180,781.29
  6. Step 6: Final answer
    x = 138,273.61

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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.