Home / 119,721.80-165,213.02-66,005.56

Finding the Fourth Proportional to 119,721.80, 165,213.02 and 66,005.56

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Solution

The fourth proportional to 119,721.80, 165,213.02 and 66,005.56 is: 91,085.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,721.80 : 165,213.02 = 66,005.56 : x
  2. Step 2: Convert to fraction form
    119,721.80/165,213.02 = 66,005.56/x
  3. Step 3: Cross multiply
    119,721.80x = 165,213.02 × 66,005.56
  4. Step 4: Simplify right side
    119,721.80x = 10,904,977,904.39
  5. Step 5: Solve for x
    x = 10,904,977,904.39/119,721.80
  6. Step 6: Final answer
    x = 91,085.98

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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.