Home / 139,720.86-192,815.98-76,058.51

Finding the Fourth Proportional to 139,720.86, 192,815.98 and 76,058.51

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Solution

The fourth proportional to 139,720.86, 192,815.98 and 76,058.51 is: 104,961.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,720.86 : 192,815.98 = 76,058.51 : x
  2. Step 2: Convert to fraction form
    139,720.86/192,815.98 = 76,058.51/x
  3. Step 3: Cross multiply
    139,720.86x = 192,815.98 × 76,058.51
  4. Step 4: Simplify right side
    139,720.86x = 14,665,294,988.76
  5. Step 5: Solve for x
    x = 14,665,294,988.76/139,720.86
  6. Step 6: Final answer
    x = 104,961.39

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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.