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Finding the Fourth Proportional to 110,969.28, 153,125.60 and 65,648.96

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Solution

The fourth proportional to 110,969.28, 153,125.60 and 65,648.96 is: 90,588.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,969.28 : 153,125.60 = 65,648.96 : x
  2. Step 2: Convert to fraction form
    110,969.28/153,125.60 = 65,648.96/x
  3. Step 3: Cross multiply
    110,969.28x = 153,125.60 × 65,648.96
  4. Step 4: Simplify right side
    110,969.28x = 10,052,536,389.38
  5. Step 5: Solve for x
    x = 10,052,536,389.38/110,969.28
  6. Step 6: Final answer
    x = 90,588.46

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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.