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Finding the Fourth Proportional to 187,172.35, 280,787.68 and 112,274.89

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Solution

The fourth proportional to 187,172.35, 280,787.68 and 112,274.89 is: 168,429.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,172.35 : 280,787.68 = 112,274.89 : x
  2. Step 2: Convert to fraction form
    187,172.35/280,787.68 = 112,274.89/x
  3. Step 3: Cross multiply
    187,172.35x = 280,787.68 × 112,274.89
  4. Step 4: Simplify right side
    187,172.35x = 31,525,405,885.36
  5. Step 5: Solve for x
    x = 31,525,405,885.36/187,172.35
  6. Step 6: Final answer
    x = 168,429.82

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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.