Home / 119,811.65-165,338.01-66,101.81

Finding the Fourth Proportional to 119,811.65, 165,338.01 and 66,101.81

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Solution

The fourth proportional to 119,811.65, 165,338.01 and 66,101.81 is: 91,219.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,811.65 : 165,338.01 = 66,101.81 : x
  2. Step 2: Convert to fraction form
    119,811.65/165,338.01 = 66,101.81/x
  3. Step 3: Cross multiply
    119,811.65x = 165,338.01 × 66,101.81
  4. Step 4: Simplify right side
    119,811.65x = 10,929,141,722.80
  5. Step 5: Solve for x
    x = 10,929,141,722.80/119,811.65
  6. Step 6: Final answer
    x = 91,219.36

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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.