Home / 180,722.79-249,386.18-100,145.61

Finding the Fourth Proportional to 180,722.79, 249,386.18 and 100,145.61

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Solution

The fourth proportional to 180,722.79, 249,386.18 and 100,145.61 is: 138,194.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,722.79 : 249,386.18 = 100,145.61 : x
  2. Step 2: Convert to fraction form
    180,722.79/249,386.18 = 100,145.61/x
  3. Step 3: Cross multiply
    180,722.79x = 249,386.18 × 100,145.61
  4. Step 4: Simplify right side
    180,722.79x = 24,974,930,620.94
  5. Step 5: Solve for x
    x = 24,974,930,620.94/180,722.79
  6. Step 6: Final answer
    x = 138,194.69

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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.