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Finding the Fourth Proportional to 138,840.64, 208,336.30 and 58,923.56

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Solution

The fourth proportional to 138,840.64, 208,336.30 and 58,923.56 is: 88,417.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,840.64 : 208,336.30 = 58,923.56 : x
  2. Step 2: Convert to fraction form
    138,840.64/208,336.30 = 58,923.56/x
  3. Step 3: Cross multiply
    138,840.64x = 208,336.30 × 58,923.56
  4. Step 4: Simplify right side
    138,840.64x = 12,275,915,713.34
  5. Step 5: Solve for x
    x = 12,275,915,713.34/138,840.64
  6. Step 6: Final answer
    x = 88,417.31

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1.5x scale

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.