Home / 111,918.12-154,442.34-61,613.88

Finding the Fourth Proportional to 111,918.12, 154,442.34 and 61,613.88

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Solution

The fourth proportional to 111,918.12, 154,442.34 and 61,613.88 is: 85,024.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,918.12 : 154,442.34 = 61,613.88 : x
  2. Step 2: Convert to fraction form
    111,918.12/154,442.34 = 61,613.88/x
  3. Step 3: Cross multiply
    111,918.12x = 154,442.34 × 61,613.88
  4. Step 4: Simplify right side
    111,918.12x = 9,515,791,803.68
  5. Step 5: Solve for x
    x = 9,515,791,803.68/111,918.12
  6. Step 6: Final answer
    x = 85,024.59

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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.