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Finding the Fourth Proportional to 187,338.60, 281,007.90 and 140,099.40

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Solution

The fourth proportional to 187,338.60, 281,007.90 and 140,099.40 is: 210,149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,338.60 : 281,007.90 = 140,099.40 : x
  2. Step 2: Convert to fraction form
    187,338.60/281,007.90 = 140,099.40/x
  3. Step 3: Cross multiply
    187,338.60x = 281,007.90 × 140,099.40
  4. Step 4: Simplify right side
    187,338.60x = 39,369,038,185.26
  5. Step 5: Solve for x
    x = 39,369,038,185.26/187,338.60
  6. Step 6: Final answer
    x = 210,149.10

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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.