Home / 139,675.83-192,756.68-76,017.66

Finding the Fourth Proportional to 139,675.83, 192,756.68 and 76,017.66

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Solution

The fourth proportional to 139,675.83, 192,756.68 and 76,017.66 is: 104,906.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,675.83 : 192,756.68 = 76,017.66 : x
  2. Step 2: Convert to fraction form
    139,675.83/192,756.68 = 76,017.66/x
  3. Step 3: Cross multiply
    139,675.83x = 192,756.68 × 76,017.66
  4. Step 4: Simplify right side
    139,675.83x = 14,652,911,762.97
  5. Step 5: Solve for x
    x = 14,652,911,762.97/139,675.83
  6. Step 6: Final answer
    x = 104,906.57

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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.