Home / 123,138.74-169,927.62-69,423

Finding the Fourth Proportional to 123,138.74, 169,927.62 and 69,423

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Solution

The fourth proportional to 123,138.74, 169,927.62 and 69,423 is: 95,801.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,138.74 : 169,927.62 = 69,423 : x
  2. Step 2: Convert to fraction form
    123,138.74/169,927.62 = 69,423/x
  3. Step 3: Cross multiply
    123,138.74x = 169,927.62 × 69,423
  4. Step 4: Simplify right side
    123,138.74x = 11,796,885,163.26
  5. Step 5: Solve for x
    x = 11,796,885,163.26/123,138.74
  6. Step 6: Final answer
    x = 95,801.57

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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.