Home / 117,211.05-161,741.61-66,228.21

Finding the Fourth Proportional to 117,211.05, 161,741.61 and 66,228.21

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Solution

The fourth proportional to 117,211.05, 161,741.61 and 66,228.21 is: 91,389.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,211.05 : 161,741.61 = 66,228.21 : x
  2. Step 2: Convert to fraction form
    117,211.05/161,741.61 = 66,228.21/x
  3. Step 3: Cross multiply
    117,211.05x = 161,741.61 × 66,228.21
  4. Step 4: Simplify right side
    117,211.05x = 10,711,857,312.82
  5. Step 5: Solve for x
    x = 10,711,857,312.82/117,211.05
  6. Step 6: Final answer
    x = 91,389.48

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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.