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Finding the Fourth Proportional to 75,297.85, 112,946.13 and 19,138.12

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Solution

The fourth proportional to 75,297.85, 112,946.13 and 19,138.12 is: 28,707.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,297.85 : 112,946.13 = 19,138.12 : x
  2. Step 2: Convert to fraction form
    75,297.85/112,946.13 = 19,138.12/x
  3. Step 3: Cross multiply
    75,297.85x = 112,946.13 × 19,138.12
  4. Step 4: Simplify right side
    75,297.85x = 2,161,576,589.48
  5. Step 5: Solve for x
    x = 2,161,576,589.48/75,297.85
  6. Step 6: Final answer
    x = 28,707.02

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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.