Home / 120,341.13-180,567-45,487.28

Finding the Fourth Proportional to 120,341.13, 180,567 and 45,487.28

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Solution

The fourth proportional to 120,341.13, 180,567 and 45,487.28 is: 68,251.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,341.13 : 180,567 = 45,487.28 : x
  2. Step 2: Convert to fraction form
    120,341.13/180,567 = 45,487.28/x
  3. Step 3: Cross multiply
    120,341.13x = 180,567 × 45,487.28
  4. Step 4: Simplify right side
    120,341.13x = 8,213,500,784.93
  5. Step 5: Solve for x
    x = 8,213,500,784.93/120,341.13
  6. Step 6: Final answer
    x = 68,251.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.