Home / 120,402.72-180,544.55-70,495.38

Finding the Fourth Proportional to 120,402.72, 180,544.55 and 70,495.38

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Solution

The fourth proportional to 120,402.72, 180,544.55 and 70,495.38 is: 105,708.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,402.72 : 180,544.55 = 70,495.38 : x
  2. Step 2: Convert to fraction form
    120,402.72/180,544.55 = 70,495.38/x
  3. Step 3: Cross multiply
    120,402.72x = 180,544.55 × 70,495.38
  4. Step 4: Simplify right side
    120,402.72x = 12,727,556,306.70
  5. Step 5: Solve for x
    x = 12,727,556,306.70/120,402.72
  6. Step 6: Final answer
    x = 105,708.21

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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.