Home / 115,121.92-158,871.36-64,822.72

Finding the Fourth Proportional to 115,121.92, 158,871.36 and 64,822.72

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Solution

The fourth proportional to 115,121.92, 158,871.36 and 64,822.72 is: 89,457.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,121.92 : 158,871.36 = 64,822.72 : x
  2. Step 2: Convert to fraction form
    115,121.92/158,871.36 = 64,822.72/x
  3. Step 3: Cross multiply
    115,121.92x = 158,871.36 × 64,822.72
  4. Step 4: Simplify right side
    115,121.92x = 10,298,473,685.30
  5. Step 5: Solve for x
    x = 10,298,473,685.30/115,121.92
  6. Step 6: Final answer
    x = 89,457.11

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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.