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Finding the Fourth Proportional to 109,319.82, 150,861.88 and 61,574.02

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Solution

The fourth proportional to 109,319.82, 150,861.88 and 61,574.02 is: 84,972.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,319.82 : 150,861.88 = 61,574.02 : x
  2. Step 2: Convert to fraction form
    109,319.82/150,861.88 = 61,574.02/x
  3. Step 3: Cross multiply
    109,319.82x = 150,861.88 × 61,574.02
  4. Step 4: Simplify right side
    109,319.82x = 9,289,172,416.36
  5. Step 5: Solve for x
    x = 9,289,172,416.36/109,319.82
  6. Step 6: Final answer
    x = 84,972.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.