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Finding the Fourth Proportional to 92,303.28, 137,949.08 and 67,395.78

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Solution

The fourth proportional to 92,303.28, 137,949.08 and 67,395.78 is: 100,724.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,303.28 : 137,949.08 = 67,395.78 : x
  2. Step 2: Convert to fraction form
    92,303.28/137,949.08 = 67,395.78/x
  3. Step 3: Cross multiply
    92,303.28x = 137,949.08 × 67,395.78
  4. Step 4: Simplify right side
    92,303.28x = 9,297,185,509.90
  5. Step 5: Solve for x
    x = 9,297,185,509.90/92,303.28
  6. Step 6: Final answer
    x = 100,724.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.