Home / 111,143.16-153,449.10-99,185.96

Finding the Fourth Proportional to 111,143.16, 153,449.10 and 99,185.96

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Solution

The fourth proportional to 111,143.16, 153,449.10 and 99,185.96 is: 136,940.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,143.16 : 153,449.10 = 99,185.96 : x
  2. Step 2: Convert to fraction form
    111,143.16/153,449.10 = 99,185.96/x
  3. Step 3: Cross multiply
    111,143.16x = 153,449.10 × 99,185.96
  4. Step 4: Simplify right side
    111,143.16x = 15,219,996,294.64
  5. Step 5: Solve for x
    x = 15,219,996,294.64/111,143.16
  6. Step 6: Final answer
    x = 136,940.47

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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.