Home / 123,487.53-170,411.85-66,898.50

Finding the Fourth Proportional to 123,487.53, 170,411.85 and 66,898.50

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Solution

The fourth proportional to 123,487.53, 170,411.85 and 66,898.50 is: 92,319.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,487.53 : 170,411.85 = 66,898.50 : x
  2. Step 2: Convert to fraction form
    123,487.53/170,411.85 = 66,898.50/x
  3. Step 3: Cross multiply
    123,487.53x = 170,411.85 × 66,898.50
  4. Step 4: Simplify right side
    123,487.53x = 11,400,297,147.23
  5. Step 5: Solve for x
    x = 11,400,297,147.23/123,487.53
  6. Step 6: Final answer
    x = 92,319.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.