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Finding the Fourth Proportional to 100,903.28, 151,157.88 and 61,362.32

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Solution

The fourth proportional to 100,903.28, 151,157.88 and 61,362.32 is: 91,923.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,903.28 : 151,157.88 = 61,362.32 : x
  2. Step 2: Convert to fraction form
    100,903.28/151,157.88 = 61,362.32/x
  3. Step 3: Cross multiply
    100,903.28x = 151,157.88 × 61,362.32
  4. Step 4: Simplify right side
    100,903.28x = 9,275,397,447.29
  5. Step 5: Solve for x
    x = 9,275,397,447.29/100,903.28
  6. Step 6: Final answer
    x = 91,923.65

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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.