Home / 120,768.16-180,876.34-57,632.62

Finding the Fourth Proportional to 120,768.16, 180,876.34 and 57,632.62

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Solution

The fourth proportional to 120,768.16, 180,876.34 and 57,632.62 is: 86,317.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,768.16 : 180,876.34 = 57,632.62 : x
  2. Step 2: Convert to fraction form
    120,768.16/180,876.34 = 57,632.62/x
  3. Step 3: Cross multiply
    120,768.16x = 180,876.34 × 57,632.62
  4. Step 4: Simplify right side
    120,768.16x = 10,424,377,226.13
  5. Step 5: Solve for x
    x = 10,424,377,226.13/120,768.16
  6. Step 6: Final answer
    x = 86,317.26

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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.