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Finding the Fourth Proportional to 171,599.04, 257,245.43 and 87,312.06

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Solution

The fourth proportional to 171,599.04, 257,245.43 and 87,312.06 is: 130,890.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,599.04 : 257,245.43 = 87,312.06 : x
  2. Step 2: Convert to fraction form
    171,599.04/257,245.43 = 87,312.06/x
  3. Step 3: Cross multiply
    171,599.04x = 257,245.43 × 87,312.06
  4. Step 4: Simplify right side
    171,599.04x = 22,460,627,982.33
  5. Step 5: Solve for x
    x = 22,460,627,982.33/171,599.04
  6. Step 6: Final answer
    x = 130,890.17

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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.