Home / 120,178.86-165,867.65-72,432.27

Finding the Fourth Proportional to 120,178.86, 165,867.65 and 72,432.27

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Solution

The fourth proportional to 120,178.86, 165,867.65 and 72,432.27 is: 99,969.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,178.86 : 165,867.65 = 72,432.27 : x
  2. Step 2: Convert to fraction form
    120,178.86/165,867.65 = 72,432.27/x
  3. Step 3: Cross multiply
    120,178.86x = 165,867.65 × 72,432.27
  4. Step 4: Simplify right side
    120,178.86x = 12,014,170,046.90
  5. Step 5: Solve for x
    x = 12,014,170,046.90/120,178.86
  6. Step 6: Final answer
    x = 99,969.08

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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.