Home / 112,770.52-155,621.44-61,782.78

Finding the Fourth Proportional to 112,770.52, 155,621.44 and 61,782.78

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Solution

The fourth proportional to 112,770.52, 155,621.44 and 61,782.78 is: 85,259.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,770.52 : 155,621.44 = 61,782.78 : x
  2. Step 2: Convert to fraction form
    112,770.52/155,621.44 = 61,782.78/x
  3. Step 3: Cross multiply
    112,770.52x = 155,621.44 × 61,782.78
  4. Step 4: Simplify right side
    112,770.52x = 9,614,725,190.80
  5. Step 5: Solve for x
    x = 9,614,725,190.80/112,770.52
  6. Step 6: Final answer
    x = 85,259.21

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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.