Home / 101,943.31-140,681.78-57,231.31

Finding the Fourth Proportional to 101,943.31, 140,681.78 and 57,231.31

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Solution

The fourth proportional to 101,943.31, 140,681.78 and 57,231.31 is: 78,979.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,943.31 : 140,681.78 = 57,231.31 : x
  2. Step 2: Convert to fraction form
    101,943.31/140,681.78 = 57,231.31/x
  3. Step 3: Cross multiply
    101,943.31x = 140,681.78 × 57,231.31
  4. Step 4: Simplify right side
    101,943.31x = 8,051,402,562.53
  5. Step 5: Solve for x
    x = 8,051,402,562.53/101,943.31
  6. Step 6: Final answer
    x = 78,979.21

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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.