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Finding the Fourth Proportional to 139,508.88, 192,519.90 and 75,848.28

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Solution

The fourth proportional to 139,508.88, 192,519.90 and 75,848.28 is: 104,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,508.88 : 192,519.90 = 75,848.28 : x
  2. Step 2: Convert to fraction form
    139,508.88/192,519.90 = 75,848.28/x
  3. Step 3: Cross multiply
    139,508.88x = 192,519.90 × 75,848.28
  4. Step 4: Simplify right side
    139,508.88x = 14,602,303,280.77
  5. Step 5: Solve for x
    x = 14,602,303,280.77/139,508.88
  6. Step 6: Final answer
    x = 104,669.35

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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.