Home / 180,713.19-249,385.66-100,142.06

Finding the Fourth Proportional to 180,713.19, 249,385.66 and 100,142.06

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Solution

The fourth proportional to 180,713.19, 249,385.66 and 100,142.06 is: 138,196.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,713.19 : 249,385.66 = 100,142.06 : x
  2. Step 2: Convert to fraction form
    180,713.19/249,385.66 = 100,142.06/x
  3. Step 3: Cross multiply
    180,713.19x = 249,385.66 × 100,142.06
  4. Step 4: Simplify right side
    180,713.19x = 24,973,993,726.86
  5. Step 5: Solve for x
    x = 24,973,993,726.86/180,713.19
  6. Step 6: Final answer
    x = 138,196.85

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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.