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Finding the Fourth Proportional to 116,643.78, 160,912.98 and 68,865.12

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Solution

The fourth proportional to 116,643.78, 160,912.98 and 68,865.12 is: 95,001.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,643.78 : 160,912.98 = 68,865.12 : x
  2. Step 2: Convert to fraction form
    116,643.78/160,912.98 = 68,865.12/x
  3. Step 3: Cross multiply
    116,643.78x = 160,912.98 × 68,865.12
  4. Step 4: Simplify right side
    116,643.78x = 11,081,291,677.26
  5. Step 5: Solve for x
    x = 11,081,291,677.26/116,643.78
  6. Step 6: Final answer
    x = 95,001.14

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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.