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Finding the Fourth Proportional to 139,332,019.95, 192,266,375.34 and 76,604,748.39

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Solution

The fourth proportional to 139,332,019.95, 192,266,375.34 and 76,604,748.39 is: 105,708,058.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,332,019.95 : 192,266,375.34 = 76,604,748.39 : x
  2. Step 2: Convert to fraction form
    139,332,019.95/192,266,375.34 = 76,604,748.39/x
  3. Step 3: Cross multiply
    139,332,019.95x = 192,266,375.34 × 76,604,748.39
  4. Step 4: Simplify right side
    139,332,019.95x = 14,728,517,306,778,002
  5. Step 5: Solve for x
    x = 14,728,517,306,778,002/139,332,019.95
  6. Step 6: Final answer
    x = 105,708,058.44

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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.