Home / 99,234.72-136,920.24-56,215.20

Finding the Fourth Proportional to 99,234.72, 136,920.24 and 56,215.20

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Solution

The fourth proportional to 99,234.72, 136,920.24 and 56,215.20 is: 77,563.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,234.72 : 136,920.24 = 56,215.20 : x
  2. Step 2: Convert to fraction form
    99,234.72/136,920.24 = 56,215.20/x
  3. Step 3: Cross multiply
    99,234.72x = 136,920.24 × 56,215.20
  4. Step 4: Simplify right side
    99,234.72x = 7,696,998,675.65
  5. Step 5: Solve for x
    x = 7,696,998,675.65/99,234.72
  6. Step 6: Final answer
    x = 77,563.57

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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.