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Finding the Fourth Proportional to 138,885.88, 191,662.44 and 75,223.68

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Solution

The fourth proportional to 138,885.88, 191,662.44 and 75,223.68 is: 103,808.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,885.88 : 191,662.44 = 75,223.68 : x
  2. Step 2: Convert to fraction form
    138,885.88/191,662.44 = 75,223.68/x
  3. Step 3: Cross multiply
    138,885.88x = 191,662.44 × 75,223.68
  4. Step 4: Simplify right side
    138,885.88x = 14,417,554,054.58
  5. Step 5: Solve for x
    x = 14,417,554,054.58/138,885.88
  6. Step 6: Final answer
    x = 103,808.64

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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.