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Finding the Fourth Proportional to 100,895.30, 151,342.95 and 47,574.87

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Solution

The fourth proportional to 100,895.30, 151,342.95 and 47,574.87 is: 71,362.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,895.30 : 151,342.95 = 47,574.87 : x
  2. Step 2: Convert to fraction form
    100,895.30/151,342.95 = 47,574.87/x
  3. Step 3: Cross multiply
    100,895.30x = 151,342.95 × 47,574.87
  4. Step 4: Simplify right side
    100,895.30x = 7,200,121,171.67
  5. Step 5: Solve for x
    x = 7,200,121,171.67/100,895.30
  6. Step 6: Final answer
    x = 71,362.31

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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.