Home / 112,396.18-155,105.40-61,408.70

Finding the Fourth Proportional to 112,396.18, 155,105.40 and 61,408.70

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Solution

The fourth proportional to 112,396.18, 155,105.40 and 61,408.70 is: 84,743.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,396.18 : 155,105.40 = 61,408.70 : x
  2. Step 2: Convert to fraction form
    112,396.18/155,105.40 = 61,408.70/x
  3. Step 3: Cross multiply
    112,396.18x = 155,105.40 × 61,408.70
  4. Step 4: Simplify right side
    112,396.18x = 9,524,820,976.98
  5. Step 5: Solve for x
    x = 9,524,820,976.98/112,396.18
  6. Step 6: Final answer
    x = 84,743.28

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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.