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Finding the Fourth Proportional to 107,121.94, 147,491.74 and 90,955.56

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Solution

The fourth proportional to 107,121.94, 147,491.74 and 90,955.56 is: 125,232.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,121.94 : 147,491.74 = 90,955.56 : x
  2. Step 2: Convert to fraction form
    107,121.94/147,491.74 = 90,955.56/x
  3. Step 3: Cross multiply
    107,121.94x = 147,491.74 × 90,955.56
  4. Step 4: Simplify right side
    107,121.94x = 13,415,193,132.60
  5. Step 5: Solve for x
    x = 13,415,193,132.60/107,121.94
  6. Step 6: Final answer
    x = 125,232.91

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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.