Home / 115,706.36-159,689.56-64,721.92

Finding the Fourth Proportional to 115,706.36, 159,689.56 and 64,721.92

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Solution

The fourth proportional to 115,706.36, 159,689.56 and 64,721.92 is: 89,324.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,706.36 : 159,689.56 = 64,721.92 : x
  2. Step 2: Convert to fraction form
    115,706.36/159,689.56 = 64,721.92/x
  3. Step 3: Cross multiply
    115,706.36x = 159,689.56 × 64,721.92
  4. Step 4: Simplify right side
    115,706.36x = 10,335,414,927.16
  5. Step 5: Solve for x
    x = 10,335,414,927.16/115,706.36
  6. Step 6: Final answer
    x = 89,324.52

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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.