Home / 109,531.21-151,153.62-61,137.76

Finding the Fourth Proportional to 109,531.21, 151,153.62 and 61,137.76

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Solution

The fourth proportional to 109,531.21, 151,153.62 and 61,137.76 is: 84,370.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,531.21 : 151,153.62 = 61,137.76 : x
  2. Step 2: Convert to fraction form
    109,531.21/151,153.62 = 61,137.76/x
  3. Step 3: Cross multiply
    109,531.21x = 151,153.62 × 61,137.76
  4. Step 4: Simplify right side
    109,531.21x = 9,241,193,742.69
  5. Step 5: Solve for x
    x = 9,241,193,742.69/109,531.21
  6. Step 6: Final answer
    x = 84,370.42

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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.