Home / 119,870.69-179,815.75-39,905.76

Finding the Fourth Proportional to 119,870.69, 179,815.75 and 39,905.76

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Solution

The fourth proportional to 119,870.69, 179,815.75 and 39,905.76 is: 59,861.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,870.69 : 179,815.75 = 39,905.76 : x
  2. Step 2: Convert to fraction form
    119,870.69/179,815.75 = 39,905.76/x
  3. Step 3: Cross multiply
    119,870.69x = 179,815.75 × 39,905.76
  4. Step 4: Simplify right side
    119,870.69x = 7,175,684,738.26
  5. Step 5: Solve for x
    x = 7,175,684,738.26/119,870.69
  6. Step 6: Final answer
    x = 59,861.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.