Home / 117,885.36-162,685.72-66,211.55

Finding the Fourth Proportional to 117,885.36, 162,685.72 and 66,211.55

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Solution

The fourth proportional to 117,885.36, 162,685.72 and 66,211.55 is: 91,374.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,885.36 : 162,685.72 = 66,211.55 : x
  2. Step 2: Convert to fraction form
    117,885.36/162,685.72 = 66,211.55/x
  3. Step 3: Cross multiply
    117,885.36x = 162,685.72 × 66,211.55
  4. Step 4: Simplify right side
    117,885.36x = 10,771,673,348.88
  5. Step 5: Solve for x
    x = 10,771,673,348.88/117,885.36
  6. Step 6: Final answer
    x = 91,374.14

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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.