Home / 189,665.18-261,756.05-103,637.24

Finding the Fourth Proportional to 189,665.18, 261,756.05 and 103,637.24

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Solution

The fourth proportional to 189,665.18, 261,756.05 and 103,637.24 is: 143,029.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,665.18 : 261,756.05 = 103,637.24 : x
  2. Step 2: Convert to fraction form
    189,665.18/261,756.05 = 103,637.24/x
  3. Step 3: Cross multiply
    189,665.18x = 261,756.05 × 103,637.24
  4. Step 4: Simplify right side
    189,665.18x = 27,127,674,575.30
  5. Step 5: Solve for x
    x = 27,127,674,575.30/189,665.18
  6. Step 6: Final answer
    x = 143,029.28

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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.