Home / 90,860.40-136,436.40-61,408.80

Finding the Fourth Proportional to 90,860.40, 136,436.40 and 61,408.80

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Solution

The fourth proportional to 90,860.40, 136,436.40 and 61,408.80 is: 92,211.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,860.40 : 136,436.40 = 61,408.80 : x
  2. Step 2: Convert to fraction form
    90,860.40/136,436.40 = 61,408.80/x
  3. Step 3: Cross multiply
    90,860.40x = 136,436.40 × 61,408.80
  4. Step 4: Simplify right side
    90,860.40x = 8,378,395,600.32
  5. Step 5: Solve for x
    x = 8,378,395,600.32/90,860.40
  6. Step 6: Final answer
    x = 92,211.74

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1.5x scale

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.