Home / 180,719.79-249,382.04-100,142.61

Finding the Fourth Proportional to 180,719.79, 249,382.04 and 100,142.61

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Solution

The fourth proportional to 180,719.79, 249,382.04 and 100,142.61 is: 138,190.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,719.79 : 249,382.04 = 100,142.61 : x
  2. Step 2: Convert to fraction form
    180,719.79/249,382.04 = 100,142.61/x
  3. Step 3: Cross multiply
    180,719.79x = 249,382.04 × 100,142.61
  4. Step 4: Simplify right side
    180,719.79x = 24,973,767,872.01
  5. Step 5: Solve for x
    x = 24,973,767,872.01/180,719.79
  6. Step 6: Final answer
    x = 138,190.55

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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.