Home / 112,408.62-155,119.10-61,420.55

Finding the Fourth Proportional to 112,408.62, 155,119.10 and 61,420.55

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Solution

The fourth proportional to 112,408.62, 155,119.10 and 61,420.55 is: 84,757.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,408.62 : 155,119.10 = 61,420.55 : x
  2. Step 2: Convert to fraction form
    112,408.62/155,119.10 = 61,420.55/x
  3. Step 3: Cross multiply
    112,408.62x = 155,119.10 × 61,420.55
  4. Step 4: Simplify right side
    112,408.62x = 9,527,499,354.81
  5. Step 5: Solve for x
    x = 9,527,499,354.81/112,408.62
  6. Step 6: Final answer
    x = 84,757.73

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1.5x scale

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.