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Finding the Fourth Proportional to 123,347.50, 170,219.50 and 66,758.87

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Solution

The fourth proportional to 123,347.50, 170,219.50 and 66,758.87 is: 92,127.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,347.50 : 170,219.50 = 66,758.87 : x
  2. Step 2: Convert to fraction form
    123,347.50/170,219.50 = 66,758.87/x
  3. Step 3: Cross multiply
    123,347.50x = 170,219.50 × 66,758.87
  4. Step 4: Simplify right side
    123,347.50x = 11,363,661,730.62
  5. Step 5: Solve for x
    x = 11,363,661,730.62/123,347.50
  6. Step 6: Final answer
    x = 92,127.22

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1.5x scale

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.