Home / 189,243.79-261,176.69-115,699.38

Finding the Fourth Proportional to 189,243.79, 261,176.69 and 115,699.38

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Solution

The fourth proportional to 189,243.79, 261,176.69 and 115,699.38 is: 159,677.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,243.79 : 261,176.69 = 115,699.38 : x
  2. Step 2: Convert to fraction form
    189,243.79/261,176.69 = 115,699.38/x
  3. Step 3: Cross multiply
    189,243.79x = 261,176.69 × 115,699.38
  4. Step 4: Simplify right side
    189,243.79x = 30,217,980,892.72
  5. Step 5: Solve for x
    x = 30,217,980,892.72/189,243.79
  6. Step 6: Final answer
    x = 159,677.53

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1.5x scale

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.