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Finding the Fourth Proportional to 106,490.10, 147,003.58 and 68,782.74

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Solution

The fourth proportional to 106,490.10, 147,003.58 and 68,782.74 is: 94,950.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,490.10 : 147,003.58 = 68,782.74 : x
  2. Step 2: Convert to fraction form
    106,490.10/147,003.58 = 68,782.74/x
  3. Step 3: Cross multiply
    106,490.10x = 147,003.58 × 68,782.74
  4. Step 4: Simplify right side
    106,490.10x = 10,111,309,022.21
  5. Step 5: Solve for x
    x = 10,111,309,022.21/106,490.10
  6. Step 6: Final answer
    x = 94,950.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.