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Finding the Fourth Proportional to 236,971.87, 355,422.74 and 87,177.11

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Solution

The fourth proportional to 236,971.87, 355,422.74 and 87,177.11 is: 130,752.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,971.87 : 355,422.74 = 87,177.11 : x
  2. Step 2: Convert to fraction form
    236,971.87/355,422.74 = 87,177.11/x
  3. Step 3: Cross multiply
    236,971.87x = 355,422.74 × 87,177.11
  4. Step 4: Simplify right side
    236,971.87x = 30,984,725,088.48
  5. Step 5: Solve for x
    x = 30,984,725,088.48/236,971.87
  6. Step 6: Final answer
    x = 130,752.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.