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Finding the Fourth Proportional to 110,509.84, 152,499.54 and 65,189.80

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Solution

The fourth proportional to 110,509.84, 152,499.54 and 65,189.80 is: 89,959.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,509.84 : 152,499.54 = 65,189.80 : x
  2. Step 2: Convert to fraction form
    110,509.84/152,499.54 = 65,189.80/x
  3. Step 3: Cross multiply
    110,509.84x = 152,499.54 × 65,189.80
  4. Step 4: Simplify right side
    110,509.84x = 9,941,414,512.69
  5. Step 5: Solve for x
    x = 9,941,414,512.69/110,509.84
  6. Step 6: Final answer
    x = 89,959.54

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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.