Home / 112,909.23-155,816.88-61,918.73

Finding the Fourth Proportional to 112,909.23, 155,816.88 and 61,918.73

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Solution

The fourth proportional to 112,909.23, 155,816.88 and 61,918.73 is: 85,449.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,909.23 : 155,816.88 = 61,918.73 : x
  2. Step 2: Convert to fraction form
    112,909.23/155,816.88 = 61,918.73/x
  3. Step 3: Cross multiply
    112,909.23x = 155,816.88 × 61,918.73
  4. Step 4: Simplify right side
    112,909.23x = 9,647,983,322.16
  5. Step 5: Solve for x
    x = 9,647,983,322.16/112,909.23
  6. Step 6: Final answer
    x = 85,449.02

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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.