Home / 187,121.40-280,792.74-68,875.80

Finding the Fourth Proportional to 187,121.40, 280,792.74 and 68,875.80

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Solution

The fourth proportional to 187,121.40, 280,792.74 and 68,875.80 is: 103,354.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,121.40 : 280,792.74 = 68,875.80 : x
  2. Step 2: Convert to fraction form
    187,121.40/280,792.74 = 68,875.80/x
  3. Step 3: Cross multiply
    187,121.40x = 280,792.74 × 68,875.80
  4. Step 4: Simplify right side
    187,121.40x = 19,339,824,601.69
  5. Step 5: Solve for x
    x = 19,339,824,601.69/187,121.40
  6. Step 6: Final answer
    x = 103,354.42

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1.5x scale

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.