Home / 139,823.76-192,955.76-76,161.36

Finding the Fourth Proportional to 139,823.76, 192,955.76 and 76,161.36

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Solution

The fourth proportional to 139,823.76, 192,955.76 and 76,161.36 is: 105,102.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,823.76 : 192,955.76 = 76,161.36 : x
  2. Step 2: Convert to fraction form
    139,823.76/192,955.76 = 76,161.36/x
  3. Step 3: Cross multiply
    139,823.76x = 192,955.76 × 76,161.36
  4. Step 4: Simplify right side
    139,823.76x = 14,695,773,101.43
  5. Step 5: Solve for x
    x = 14,695,773,101.43/139,823.76
  6. Step 6: Final answer
    x = 105,102.12

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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.