Home / 90,521.11-135,871.05-67,953.32

Finding the Fourth Proportional to 90,521.11, 135,871.05 and 67,953.32

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Solution

The fourth proportional to 90,521.11, 135,871.05 and 67,953.32 is: 101,997.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,521.11 : 135,871.05 = 67,953.32 : x
  2. Step 2: Convert to fraction form
    90,521.11/135,871.05 = 67,953.32/x
  3. Step 3: Cross multiply
    90,521.11x = 135,871.05 × 67,953.32
  4. Step 4: Simplify right side
    90,521.11x = 9,232,888,939.39
  5. Step 5: Solve for x
    x = 9,232,888,939.39/90,521.11
  6. Step 6: Final answer
    x = 101,997.08

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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.