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Finding the Fourth Proportional to 190,165.71, 285,406.95 and 100,240.71

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Solution

The fourth proportional to 190,165.71, 285,406.95 and 100,240.71 is: 150,444.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,165.71 : 285,406.95 = 100,240.71 : x
  2. Step 2: Convert to fraction form
    190,165.71/285,406.95 = 100,240.71/x
  3. Step 3: Cross multiply
    190,165.71x = 285,406.95 × 100,240.71
  4. Step 4: Simplify right side
    190,165.71x = 28,609,395,306.93
  5. Step 5: Solve for x
    x = 28,609,395,306.93/190,165.71
  6. Step 6: Final answer
    x = 150,444.55

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1.5x scale

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.