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Finding the Fourth Proportional to 150,989.80, 208,377.54 and 90,562.84

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Solution

The fourth proportional to 150,989.80, 208,377.54 and 90,562.84 is: 124,983.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,989.80 : 208,377.54 = 90,562.84 : x
  2. Step 2: Convert to fraction form
    150,989.80/208,377.54 = 90,562.84/x
  3. Step 3: Cross multiply
    150,989.80x = 208,377.54 × 90,562.84
  4. Step 4: Simplify right side
    150,989.80x = 18,871,261,814.61
  5. Step 5: Solve for x
    x = 18,871,261,814.61/150,989.80
  6. Step 6: Final answer
    x = 124,983.69

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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.