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Finding the Fourth Proportional to 187,578.76, 281,277.42 and 69,305.80

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Solution

The fourth proportional to 187,578.76, 281,277.42 and 69,305.80 is: 103,925.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,578.76 : 281,277.42 = 69,305.80 : x
  2. Step 2: Convert to fraction form
    187,578.76/281,277.42 = 69,305.80/x
  3. Step 3: Cross multiply
    187,578.76x = 281,277.42 × 69,305.80
  4. Step 4: Simplify right side
    187,578.76x = 19,494,156,615.04
  5. Step 5: Solve for x
    x = 19,494,156,615.04/187,578.76
  6. Step 6: Final answer
    x = 103,925.18

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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.