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Finding the Fourth Proportional to 139,245.17, 192,158.57 and 75,582.95

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Solution

The fourth proportional to 139,245.17, 192,158.57 and 75,582.95 is: 104,304.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,245.17 : 192,158.57 = 75,582.95 : x
  2. Step 2: Convert to fraction form
    139,245.17/192,158.57 = 75,582.95/x
  3. Step 3: Cross multiply
    139,245.17x = 192,158.57 × 75,582.95
  4. Step 4: Simplify right side
    139,245.17x = 14,523,911,210.47
  5. Step 5: Solve for x
    x = 14,523,911,210.47/139,245.17
  6. Step 6: Final answer
    x = 104,304.60

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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.