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Finding the Fourth Proportional to 107,145.40, 160,718.10 and 28,267.60

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Solution

The fourth proportional to 107,145.40, 160,718.10 and 28,267.60 is: 42,401.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,145.40 : 160,718.10 = 28,267.60 : x
  2. Step 2: Convert to fraction form
    107,145.40/160,718.10 = 28,267.60/x
  3. Step 3: Cross multiply
    107,145.40x = 160,718.10 × 28,267.60
  4. Step 4: Simplify right side
    107,145.40x = 4,543,114,963.56
  5. Step 5: Solve for x
    x = 4,543,114,963.56/107,145.40
  6. Step 6: Final answer
    x = 42,401.40

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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.