Home / 112,770.39-155,621.25-61,782.65

Finding the Fourth Proportional to 112,770.39, 155,621.25 and 61,782.65

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Solution

The fourth proportional to 112,770.39, 155,621.25 and 61,782.65 is: 85,259.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,770.39 : 155,621.25 = 61,782.65 : x
  2. Step 2: Convert to fraction form
    112,770.39/155,621.25 = 61,782.65/x
  3. Step 3: Cross multiply
    112,770.39x = 155,621.25 × 61,782.65
  4. Step 4: Simplify right side
    112,770.39x = 9,614,692,443.21
  5. Step 5: Solve for x
    x = 9,614,692,443.21/112,770.39
  6. Step 6: Final answer
    x = 85,259.02

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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.