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Finding the Fourth Proportional to 251,687.80, 377,533.62 and 91,878.28

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Solution

The fourth proportional to 251,687.80, 377,533.62 and 91,878.28 is: 137,818.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,687.80 : 377,533.62 = 91,878.28 : x
  2. Step 2: Convert to fraction form
    251,687.80/377,533.62 = 91,878.28/x
  3. Step 3: Cross multiply
    251,687.80x = 377,533.62 × 91,878.28
  4. Step 4: Simplify right side
    251,687.80x = 34,687,139,647.77
  5. Step 5: Solve for x
    x = 34,687,139,647.77/251,687.80
  6. Step 6: Final answer
    x = 137,818.12

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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.