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Finding the Fourth Proportional to 135,491.55, 186,979.65 and 75,063.48

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Solution

The fourth proportional to 135,491.55, 186,979.65 and 75,063.48 is: 103,588.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,491.55 : 186,979.65 = 75,063.48 : x
  2. Step 2: Convert to fraction form
    135,491.55/186,979.65 = 75,063.48/x
  3. Step 3: Cross multiply
    135,491.55x = 186,979.65 × 75,063.48
  4. Step 4: Simplify right side
    135,491.55x = 14,035,343,218.18
  5. Step 5: Solve for x
    x = 14,035,343,218.18/135,491.55
  6. Step 6: Final answer
    x = 103,588.33

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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.