Home / 119,718.56-165,212.78-66,005.70

Finding the Fourth Proportional to 119,718.56, 165,212.78 and 66,005.70

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Solution

The fourth proportional to 119,718.56, 165,212.78 and 66,005.70 is: 91,088.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,718.56 : 165,212.78 = 66,005.70 : x
  2. Step 2: Convert to fraction form
    119,718.56/165,212.78 = 66,005.70/x
  3. Step 3: Cross multiply
    119,718.56x = 165,212.78 × 66,005.70
  4. Step 4: Simplify right side
    119,718.56x = 10,904,984,862.82
  5. Step 5: Solve for x
    x = 10,904,984,862.82/119,718.56
  6. Step 6: Final answer
    x = 91,088.51

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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.