Home / 140,875.11-211,245.77-81,728.91

Finding the Fourth Proportional to 140,875.11, 211,245.77 and 81,728.91

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Solution

The fourth proportional to 140,875.11, 211,245.77 and 81,728.91 is: 122,554.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,875.11 : 211,245.77 = 81,728.91 : x
  2. Step 2: Convert to fraction form
    140,875.11/211,245.77 = 81,728.91/x
  3. Step 3: Cross multiply
    140,875.11x = 211,245.77 × 81,728.91
  4. Step 4: Simplify right side
    140,875.11x = 17,264,886,728.53
  5. Step 5: Solve for x
    x = 17,264,886,728.53/140,875.11
  6. Step 6: Final answer
    x = 122,554.56

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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.