Home / 105,243.33-157,889.66-71,979.06

Finding the Fourth Proportional to 105,243.33, 157,889.66 and 71,979.06

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Solution

The fourth proportional to 105,243.33, 157,889.66 and 71,979.06 is: 107,985.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,243.33 : 157,889.66 = 71,979.06 : x
  2. Step 2: Convert to fraction form
    105,243.33/157,889.66 = 71,979.06/x
  3. Step 3: Cross multiply
    105,243.33x = 157,889.66 × 71,979.06
  4. Step 4: Simplify right side
    105,243.33x = 11,364,749,542.71
  5. Step 5: Solve for x
    x = 11,364,749,542.71/105,243.33
  6. Step 6: Final answer
    x = 107,985.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.