Home / 105,121.78-157,588.86-38,546.36

Finding the Fourth Proportional to 105,121.78, 157,588.86 and 38,546.36

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Solution

The fourth proportional to 105,121.78, 157,588.86 and 38,546.36 is: 57,785.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,121.78 : 157,588.86 = 38,546.36 : x
  2. Step 2: Convert to fraction form
    105,121.78/157,588.86 = 38,546.36/x
  3. Step 3: Cross multiply
    105,121.78x = 157,588.86 × 38,546.36
  4. Step 4: Simplify right side
    105,121.78x = 6,074,476,929.55
  5. Step 5: Solve for x
    x = 6,074,476,929.55/105,121.78
  6. Step 6: Final answer
    x = 57,785.14

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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.