Home / 117,638.57-162,328.05-66,640.38

Finding the Fourth Proportional to 117,638.57, 162,328.05 and 66,640.38

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Solution

The fourth proportional to 117,638.57, 162,328.05 and 66,640.38 is: 91,956.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,638.57 : 162,328.05 = 66,640.38 : x
  2. Step 2: Convert to fraction form
    117,638.57/162,328.05 = 66,640.38/x
  3. Step 3: Cross multiply
    117,638.57x = 162,328.05 × 66,640.38
  4. Step 4: Simplify right side
    117,638.57x = 10,817,603,347.82
  5. Step 5: Solve for x
    x = 10,817,603,347.82/117,638.57
  6. Step 6: Final answer
    x = 91,956.26

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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.