Home / 109,717.07-151,408.20-61,319.78

Finding the Fourth Proportional to 109,717.07, 151,408.20 and 61,319.78

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Solution

The fourth proportional to 109,717.07, 151,408.20 and 61,319.78 is: 84,620.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,717.07 : 151,408.20 = 61,319.78 : x
  2. Step 2: Convert to fraction form
    109,717.07/151,408.20 = 61,319.78/x
  3. Step 3: Cross multiply
    109,717.07x = 151,408.20 × 61,319.78
  4. Step 4: Simplify right side
    109,717.07x = 9,284,316,757.16
  5. Step 5: Solve for x
    x = 9,284,316,757.16/109,717.07
  6. Step 6: Final answer
    x = 84,620.54

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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.