Home / 117,126.09-161,638.61-66,149.55

Finding the Fourth Proportional to 117,126.09, 161,638.61 and 66,149.55

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Solution

The fourth proportional to 117,126.09, 161,638.61 and 66,149.55 is: 91,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,126.09 : 161,638.61 = 66,149.55 : x
  2. Step 2: Convert to fraction form
    117,126.09/161,638.61 = 66,149.55/x
  3. Step 3: Cross multiply
    117,126.09x = 161,638.61 × 66,149.55
  4. Step 4: Simplify right side
    117,126.09x = 10,692,320,983.38
  5. Step 5: Solve for x
    x = 10,692,320,983.38/117,126.09
  6. Step 6: Final answer
    x = 91,288.98

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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.