Home / 187,048.45-280,684.46-68,731.75

Finding the Fourth Proportional to 187,048.45, 280,684.46 and 68,731.75

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Solution

The fourth proportional to 187,048.45, 280,684.46 and 68,731.75 is: 103,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,048.45 : 280,684.46 = 68,731.75 : x
  2. Step 2: Convert to fraction form
    187,048.45/280,684.46 = 68,731.75/x
  3. Step 3: Cross multiply
    187,048.45x = 280,684.46 × 68,731.75
  4. Step 4: Simplify right side
    187,048.45x = 19,291,934,656.29
  5. Step 5: Solve for x
    x = 19,291,934,656.29/187,048.45
  6. Step 6: Final answer
    x = 103,138.70

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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.