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Finding the Fourth Proportional to 91,220.52, 136,878.12 and 69,027.24

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Solution

The fourth proportional to 91,220.52, 136,878.12 and 69,027.24 is: 103,576.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,220.52 : 136,878.12 = 69,027.24 : x
  2. Step 2: Convert to fraction form
    91,220.52/136,878.12 = 69,027.24/x
  3. Step 3: Cross multiply
    91,220.52x = 136,878.12 × 69,027.24
  4. Step 4: Simplify right side
    91,220.52x = 9,448,318,839.99
  5. Step 5: Solve for x
    x = 9,448,318,839.99/91,220.52
  6. Step 6: Final answer
    x = 103,576.68

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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.