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Finding the Fourth Proportional to 139,555.68, 192,585.48 and 75,894

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Solution

The fourth proportional to 139,555.68, 192,585.48 and 75,894 is: 104,732.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,555.68 : 192,585.48 = 75,894 : x
  2. Step 2: Convert to fraction form
    139,555.68/192,585.48 = 75,894/x
  3. Step 3: Cross multiply
    139,555.68x = 192,585.48 × 75,894
  4. Step 4: Simplify right side
    139,555.68x = 14,616,082,419.12
  5. Step 5: Solve for x
    x = 14,616,082,419.12/139,555.68
  6. Step 6: Final answer
    x = 104,732.98

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Why These Related Problems?

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