Home / 180,986.64-249,761.61-100,415.04

Finding the Fourth Proportional to 180,986.64, 249,761.61 and 100,415.04

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Solution

The fourth proportional to 180,986.64, 249,761.61 and 100,415.04 is: 138,572.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,986.64 : 249,761.61 = 100,415.04 : x
  2. Step 2: Convert to fraction form
    180,986.64/249,761.61 = 100,415.04/x
  3. Step 3: Cross multiply
    180,986.64x = 249,761.61 × 100,415.04
  4. Step 4: Simplify right side
    180,986.64x = 25,079,822,058.61
  5. Step 5: Solve for x
    x = 25,079,822,058.61/180,986.64
  6. Step 6: Final answer
    x = 138,572.78

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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.