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Finding the Fourth Proportional to 187,370.40, 281,059.28 and 68,980.80

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Solution

The fourth proportional to 187,370.40, 281,059.28 and 68,980.80 is: 103,472.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,370.40 : 281,059.28 = 68,980.80 : x
  2. Step 2: Convert to fraction form
    187,370.40/281,059.28 = 68,980.80/x
  3. Step 3: Cross multiply
    187,370.40x = 281,059.28 × 68,980.80
  4. Step 4: Simplify right side
    187,370.40x = 19,387,693,981.82
  5. Step 5: Solve for x
    x = 19,387,693,981.82/187,370.40
  6. Step 6: Final answer
    x = 103,472.55

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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.