Home / 119,721.87-165,217.37-66,005.51

Finding the Fourth Proportional to 119,721.87, 165,217.37 and 66,005.51

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Solution

The fourth proportional to 119,721.87, 165,217.37 and 66,005.51 is: 91,088.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,721.87 : 165,217.37 = 66,005.51 : x
  2. Step 2: Convert to fraction form
    119,721.87/165,217.37 = 66,005.51/x
  3. Step 3: Cross multiply
    119,721.87x = 165,217.37 × 66,005.51
  4. Step 4: Simplify right side
    119,721.87x = 10,905,255,611.59
  5. Step 5: Solve for x
    x = 10,905,255,611.59/119,721.87
  6. Step 6: Final answer
    x = 91,088.25

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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.