Home / 139,930.56-193,103.04-76,267.20

Finding the Fourth Proportional to 139,930.56, 193,103.04 and 76,267.20

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Solution

The fourth proportional to 139,930.56, 193,103.04 and 76,267.20 is: 105,248.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,930.56 : 193,103.04 = 76,267.20 : x
  2. Step 2: Convert to fraction form
    139,930.56/193,103.04 = 76,267.20/x
  3. Step 3: Cross multiply
    139,930.56x = 193,103.04 × 76,267.20
  4. Step 4: Simplify right side
    139,930.56x = 14,727,428,172.29
  5. Step 5: Solve for x
    x = 14,727,428,172.29/139,930.56
  6. Step 6: Final answer
    x = 105,248.12

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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.