Home / 153,791.19-212,099.31-100,056.60

Finding the Fourth Proportional to 153,791.19, 212,099.31 and 100,056.60

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Solution

The fourth proportional to 153,791.19, 212,099.31 and 100,056.60 is: 137,991.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,791.19 : 212,099.31 = 100,056.60 : x
  2. Step 2: Convert to fraction form
    153,791.19/212,099.31 = 100,056.60/x
  3. Step 3: Cross multiply
    153,791.19x = 212,099.31 × 100,056.60
  4. Step 4: Simplify right side
    153,791.19x = 21,221,935,820.95
  5. Step 5: Solve for x
    x = 21,221,935,820.95/153,791.19
  6. Step 6: Final answer
    x = 137,991.88

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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.