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Finding the Fourth Proportional to 99,136.80, 148,618.80 and 59,709.60

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Solution

The fourth proportional to 99,136.80, 148,618.80 and 59,709.60 is: 89,512.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,136.80 : 148,618.80 = 59,709.60 : x
  2. Step 2: Convert to fraction form
    99,136.80/148,618.80 = 59,709.60/x
  3. Step 3: Cross multiply
    99,136.80x = 148,618.80 × 59,709.60
  4. Step 4: Simplify right side
    99,136.80x = 8,873,969,100.48
  5. Step 5: Solve for x
    x = 8,873,969,100.48/99,136.80
  6. Step 6: Final answer
    x = 89,512.36

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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.