Home / 90,885.24-136,259.82-61,219.80

Finding the Fourth Proportional to 90,885.24, 136,259.82 and 61,219.80

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Solution

The fourth proportional to 90,885.24, 136,259.82 and 61,219.80 is: 91,783.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,885.24 : 136,259.82 = 61,219.80 : x
  2. Step 2: Convert to fraction form
    90,885.24/136,259.82 = 61,219.80/x
  3. Step 3: Cross multiply
    90,885.24x = 136,259.82 × 61,219.80
  4. Step 4: Simplify right side
    90,885.24x = 8,341,798,928.44
  5. Step 5: Solve for x
    x = 8,341,798,928.44/90,885.24
  6. Step 6: Final answer
    x = 91,783.87

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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.