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Finding the Fourth Proportional to 123,881.93, 170,927.66 and 72,896.88

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Solution

The fourth proportional to 123,881.93, 170,927.66 and 72,896.88 is: 100,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,881.93 : 170,927.66 = 72,896.88 : x
  2. Step 2: Convert to fraction form
    123,881.93/170,927.66 = 72,896.88/x
  3. Step 3: Cross multiply
    123,881.93x = 170,927.66 × 72,896.88
  4. Step 4: Simplify right side
    123,881.93x = 12,460,093,396.20
  5. Step 5: Solve for x
    x = 12,460,093,396.20/123,881.93
  6. Step 6: Final answer
    x = 100,580.40

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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.