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Finding the Fourth Proportional to 155,178.87, 232,870.38 and 85,107.39

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Solution

The fourth proportional to 155,178.87, 232,870.38 and 85,107.39 is: 127,717.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,178.87 : 232,870.38 = 85,107.39 : x
  2. Step 2: Convert to fraction form
    155,178.87/232,870.38 = 85,107.39/x
  3. Step 3: Cross multiply
    155,178.87x = 232,870.38 × 85,107.39
  4. Step 4: Simplify right side
    155,178.87x = 19,818,990,250.11
  5. Step 5: Solve for x
    x = 19,818,990,250.11/155,178.87
  6. Step 6: Final answer
    x = 127,717.07

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.