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Finding the Fourth Proportional to 189,772.00, 261,880.80 and 103,727.12

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Solution

The fourth proportional to 189,772.00, 261,880.80 and 103,727.12 is: 143,140.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,772.00 : 261,880.80 = 103,727.12 : x
  2. Step 2: Convert to fraction form
    189,772.00/261,880.80 = 103,727.12/x
  3. Step 3: Cross multiply
    189,772.00x = 261,880.80 × 103,727.12
  4. Step 4: Simplify right side
    189,772.00x = 27,164,139,468.92
  5. Step 5: Solve for x
    x = 27,164,139,468.92/189,772.00
  6. Step 6: Final answer
    x = 143,140.93

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1.5x scale

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.