Home / 145,424.11-200,687.78-80,898.50

Finding the Fourth Proportional to 145,424.11, 200,687.78 and 80,898.50

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Solution

The fourth proportional to 145,424.11, 200,687.78 and 80,898.50 is: 111,641.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,424.11 : 200,687.78 = 80,898.50 : x
  2. Step 2: Convert to fraction form
    145,424.11/200,687.78 = 80,898.50/x
  3. Step 3: Cross multiply
    145,424.11x = 200,687.78 × 80,898.50
  4. Step 4: Simplify right side
    145,424.11x = 16,235,339,490.37
  5. Step 5: Solve for x
    x = 16,235,339,490.37/145,424.11
  6. Step 6: Final answer
    x = 111,641.32

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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.