Home / 180,932.78-249,717.11-100,386.26

Finding the Fourth Proportional to 180,932.78, 249,717.11 and 100,386.26

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Solution

The fourth proportional to 180,932.78, 249,717.11 and 100,386.26 is: 138,549.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,932.78 : 249,717.11 = 100,386.26 : x
  2. Step 2: Convert to fraction form
    180,932.78/249,717.11 = 100,386.26/x
  3. Step 3: Cross multiply
    180,932.78x = 249,717.11 × 100,386.26
  4. Step 4: Simplify right side
    180,932.78x = 25,068,166,730.91
  5. Step 5: Solve for x
    x = 25,068,166,730.91/180,932.78
  6. Step 6: Final answer
    x = 138,549.61

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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.