Home / 187,043.81-280,574.04-68,650.56

Finding the Fourth Proportional to 187,043.81, 280,574.04 and 68,650.56

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Solution

The fourth proportional to 187,043.81, 280,574.04 and 68,650.56 is: 102,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,043.81 : 280,574.04 = 68,650.56 : x
  2. Step 2: Convert to fraction form
    187,043.81/280,574.04 = 68,650.56/x
  3. Step 3: Cross multiply
    187,043.81x = 280,574.04 × 68,650.56
  4. Step 4: Simplify right side
    187,043.81x = 19,261,564,967.46
  5. Step 5: Solve for x
    x = 19,261,564,967.46/187,043.81
  6. Step 6: Final answer
    x = 102,978.90

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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.