Home / 117,149.68-161,669.28-66,178.81

Finding the Fourth Proportional to 117,149.68, 161,669.28 and 66,178.81

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Solution

The fourth proportional to 117,149.68, 161,669.28 and 66,178.81 is: 91,328.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,149.68 : 161,669.28 = 66,178.81 : x
  2. Step 2: Convert to fraction form
    117,149.68/161,669.28 = 66,178.81/x
  3. Step 3: Cross multiply
    117,149.68x = 161,669.28 × 66,178.81
  4. Step 4: Simplify right side
    117,149.68x = 10,699,080,563.96
  5. Step 5: Solve for x
    x = 10,699,080,563.96/117,149.68
  6. Step 6: Final answer
    x = 91,328.30

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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.