Home / 109,531.22-151,153.70-61,135.34

Finding the Fourth Proportional to 109,531.22, 151,153.70 and 61,135.34

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Solution

The fourth proportional to 109,531.22, 151,153.70 and 61,135.34 is: 84,367.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,531.22 : 151,153.70 = 61,135.34 : x
  2. Step 2: Convert to fraction form
    109,531.22/151,153.70 = 61,135.34/x
  3. Step 3: Cross multiply
    109,531.22x = 151,153.70 × 61,135.34
  4. Step 4: Simplify right side
    109,531.22x = 9,240,831,780.31
  5. Step 5: Solve for x
    x = 9,240,831,780.31/109,531.22
  6. Step 6: Final answer
    x = 84,367.11

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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.