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Finding the Fourth Proportional to 190,603.64, 285,947.04 and 72,276.14

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Solution

The fourth proportional to 190,603.64, 285,947.04 and 72,276.14 is: 108,429.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,603.64 : 285,947.04 = 72,276.14 : x
  2. Step 2: Convert to fraction form
    190,603.64/285,947.04 = 72,276.14/x
  3. Step 3: Cross multiply
    190,603.64x = 285,947.04 × 72,276.14
  4. Step 4: Simplify right side
    190,603.64x = 20,667,148,295.63
  5. Step 5: Solve for x
    x = 20,667,148,295.63/190,603.64
  6. Step 6: Final answer
    x = 108,429.98

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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.