Home / 99,767.20-149,823.60-53,111.20

Finding the Fourth Proportional to 99,767.20, 149,823.60 and 53,111.20

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Solution

The fourth proportional to 99,767.20, 149,823.60 and 53,111.20 is: 79,758.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,767.20 : 149,823.60 = 53,111.20 : x
  2. Step 2: Convert to fraction form
    99,767.20/149,823.60 = 53,111.20/x
  3. Step 3: Cross multiply
    99,767.20x = 149,823.60 × 53,111.20
  4. Step 4: Simplify right side
    99,767.20x = 7,957,311,184.32
  5. Step 5: Solve for x
    x = 7,957,311,184.32/99,767.20
  6. Step 6: Final answer
    x = 79,758.79

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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.