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Finding the Fourth Proportional to 123,477.67, 170,400.36 and 66,890.26

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Solution

The fourth proportional to 123,477.67, 170,400.36 and 66,890.26 is: 92,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,477.67 : 170,400.36 = 66,890.26 : x
  2. Step 2: Convert to fraction form
    123,477.67/170,400.36 = 66,890.26/x
  3. Step 3: Cross multiply
    123,477.67x = 170,400.36 × 66,890.26
  4. Step 4: Simplify right side
    123,477.67x = 11,398,124,384.49
  5. Step 5: Solve for x
    x = 11,398,124,384.49/123,477.67
  6. Step 6: Final answer
    x = 92,309.20

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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.