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Finding the Fourth Proportional to 154,112.48, 212,664.48 and 87,031.52

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Solution

The fourth proportional to 154,112.48, 212,664.48 and 87,031.52 is: 120,097.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,112.48 : 212,664.48 = 87,031.52 : x
  2. Step 2: Convert to fraction form
    154,112.48/212,664.48 = 87,031.52/x
  3. Step 3: Cross multiply
    154,112.48x = 212,664.48 × 87,031.52
  4. Step 4: Simplify right side
    154,112.48x = 18,508,512,944.41
  5. Step 5: Solve for x
    x = 18,508,512,944.41/154,112.48
  6. Step 6: Final answer
    x = 120,097.43

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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.