Home / 115,121.28-158,864.96-64,133.94

Finding the Fourth Proportional to 115,121.28, 158,864.96 and 64,133.94

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Solution

The fourth proportional to 115,121.28, 158,864.96 and 64,133.94 is: 88,503.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,121.28 : 158,864.96 = 64,133.94 : x
  2. Step 2: Convert to fraction form
    115,121.28/158,864.96 = 64,133.94/x
  3. Step 3: Cross multiply
    115,121.28x = 158,864.96 × 64,133.94
  4. Step 4: Simplify right side
    115,121.28x = 10,188,635,492.07
  5. Step 5: Solve for x
    x = 10,188,635,492.07/115,121.28
  6. Step 6: Final answer
    x = 88,503.49

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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.