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Finding the Fourth Proportional to 138,767.52, 191,454.48 and 84,996.48

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Solution

The fourth proportional to 138,767.52, 191,454.48 and 84,996.48 is: 117,267.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,767.52 : 191,454.48 = 84,996.48 : x
  2. Step 2: Convert to fraction form
    138,767.52/191,454.48 = 84,996.48/x
  3. Step 3: Cross multiply
    138,767.52x = 191,454.48 × 84,996.48
  4. Step 4: Simplify right side
    138,767.52x = 16,272,956,880.23
  5. Step 5: Solve for x
    x = 16,272,956,880.23/138,767.52
  6. Step 6: Final answer
    x = 117,267.76

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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.