Home / 139,821.58-192,956.75-76,159.23

Finding the Fourth Proportional to 139,821.58, 192,956.75 and 76,159.23

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Solution

The fourth proportional to 139,821.58, 192,956.75 and 76,159.23 is: 105,101.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,821.58 : 192,956.75 = 76,159.23 : x
  2. Step 2: Convert to fraction form
    139,821.58/192,956.75 = 76,159.23/x
  3. Step 3: Cross multiply
    139,821.58x = 192,956.75 × 76,159.23
  4. Step 4: Simplify right side
    139,821.58x = 14,695,437,503.30
  5. Step 5: Solve for x
    x = 14,695,437,503.30/139,821.58
  6. Step 6: Final answer
    x = 105,101.35

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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.