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Finding the Fourth Proportional to 139,245.03, 192,158.28 and 75,582.81

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Solution

The fourth proportional to 139,245.03, 192,158.28 and 75,582.81 is: 104,304.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,245.03 : 192,158.28 = 75,582.81 : x
  2. Step 2: Convert to fraction form
    139,245.03/192,158.28 = 75,582.81/x
  3. Step 3: Cross multiply
    139,245.03x = 192,158.28 × 75,582.81
  4. Step 4: Simplify right side
    139,245.03x = 14,523,862,767.17
  5. Step 5: Solve for x
    x = 14,523,862,767.17/139,245.03
  6. Step 6: Final answer
    x = 104,304.35

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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.