Home / 140,440.48-210,732-81,329.92

Finding the Fourth Proportional to 140,440.48, 210,732 and 81,329.92

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Solution

The fourth proportional to 140,440.48, 210,732 and 81,329.92 is: 122,036.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,440.48 : 210,732 = 81,329.92 : x
  2. Step 2: Convert to fraction form
    140,440.48/210,732 = 81,329.92/x
  3. Step 3: Cross multiply
    140,440.48x = 210,732 × 81,329.92
  4. Step 4: Simplify right side
    140,440.48x = 17,138,816,701.44
  5. Step 5: Solve for x
    x = 17,138,816,701.44/140,440.48
  6. Step 6: Final answer
    x = 122,036.16

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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.