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Finding the Fourth Proportional to 180,642.15, 249,282.90 and 100,069.41

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Solution

The fourth proportional to 180,642.15, 249,282.90 and 100,069.41 is: 138,093.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,642.15 : 249,282.90 = 100,069.41 : x
  2. Step 2: Convert to fraction form
    180,642.15/249,282.90 = 100,069.41/x
  3. Step 3: Cross multiply
    180,642.15x = 249,282.90 × 100,069.41
  4. Step 4: Simplify right side
    180,642.15x = 24,945,592,726.09
  5. Step 5: Solve for x
    x = 24,945,592,726.09/180,642.15
  6. Step 6: Final answer
    x = 138,093.98

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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.