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Finding the Fourth Proportional to 100,538.94, 150,808.32 and 25,659.08

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Solution

The fourth proportional to 100,538.94, 150,808.32 and 25,659.08 is: 38,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,538.94 : 150,808.32 = 25,659.08 : x
  2. Step 2: Convert to fraction form
    100,538.94/150,808.32 = 25,659.08/x
  3. Step 3: Cross multiply
    100,538.94x = 150,808.32 × 25,659.08
  4. Step 4: Simplify right side
    100,538.94x = 3,869,602,747.55
  5. Step 5: Solve for x
    x = 3,869,602,747.55/100,538.94
  6. Step 6: Final answer
    x = 38,488.60

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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.