Home / 189,666.18-261,757.43-103,638.24

Finding the Fourth Proportional to 189,666.18, 261,757.43 and 103,638.24

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Solution

The fourth proportional to 189,666.18, 261,757.43 and 103,638.24 is: 143,030.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,666.18 : 261,757.43 = 103,638.24 : x
  2. Step 2: Convert to fraction form
    189,666.18/261,757.43 = 103,638.24/x
  3. Step 3: Cross multiply
    189,666.18x = 261,757.43 × 103,638.24
  4. Step 4: Simplify right side
    189,666.18x = 27,128,079,352.12
  5. Step 5: Solve for x
    x = 27,128,079,352.12/189,666.18
  6. Step 6: Final answer
    x = 143,030.66

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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.