Home / 119,722.87-165,218.75-66,006.51

Finding the Fourth Proportional to 119,722.87, 165,218.75 and 66,006.51

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Solution

The fourth proportional to 119,722.87, 165,218.75 and 66,006.51 is: 91,089.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,722.87 : 165,218.75 = 66,006.51 : x
  2. Step 2: Convert to fraction form
    119,722.87/165,218.75 = 66,006.51/x
  3. Step 3: Cross multiply
    119,722.87x = 165,218.75 × 66,006.51
  4. Step 4: Simplify right side
    119,722.87x = 10,905,513,074.06
  5. Step 5: Solve for x
    x = 10,905,513,074.06/119,722.87
  6. Step 6: Final answer
    x = 91,089.64

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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.