Home / 140,212.48-210,207.04-80,981.12

Finding the Fourth Proportional to 140,212.48, 210,207.04 and 80,981.12

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Solution

The fourth proportional to 140,212.48, 210,207.04 and 80,981.12 is: 121,407.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,212.48 : 210,207.04 = 80,981.12 : x
  2. Step 2: Convert to fraction form
    140,212.48/210,207.04 = 80,981.12/x
  3. Step 3: Cross multiply
    140,212.48x = 210,207.04 × 80,981.12
  4. Step 4: Simplify right side
    140,212.48x = 17,022,801,531.08
  5. Step 5: Solve for x
    x = 17,022,801,531.08/140,212.48
  6. Step 6: Final answer
    x = 121,407.18

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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.