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Finding the Fourth Proportional to 99,538.80, 149,365.80 and 37,215.60

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Solution

The fourth proportional to 99,538.80, 149,365.80 and 37,215.60 is: 55,844.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,538.80 : 149,365.80 = 37,215.60 : x
  2. Step 2: Convert to fraction form
    99,538.80/149,365.80 = 37,215.60/x
  3. Step 3: Cross multiply
    99,538.80x = 149,365.80 × 37,215.60
  4. Step 4: Simplify right side
    99,538.80x = 5,558,737,866.48
  5. Step 5: Solve for x
    x = 5,558,737,866.48/99,538.80
  6. Step 6: Final answer
    x = 55,844.94

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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.