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Finding the Fourth Proportional to 536,759.80, 805,139.16 and 137,399.92

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Solution

The fourth proportional to 536,759.80, 805,139.16 and 137,399.92 is: 206,099.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,759.80 : 805,139.16 = 137,399.92 : x
  2. Step 2: Convert to fraction form
    536,759.80/805,139.16 = 137,399.92/x
  3. Step 3: Cross multiply
    536,759.80x = 805,139.16 × 137,399.92
  4. Step 4: Simplify right side
    536,759.80x = 110,626,056,172.87
  5. Step 5: Solve for x
    x = 110,626,056,172.87/536,759.80
  6. Step 6: Final answer
    x = 206,099.74

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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.