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Finding the Fourth Proportional to 122,353.56, 168,862.72 and 68,628.42

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Solution

The fourth proportional to 122,353.56, 168,862.72 and 68,628.42 is: 94,715.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,353.56 : 168,862.72 = 68,628.42 : x
  2. Step 2: Convert to fraction form
    122,353.56/168,862.72 = 68,628.42/x
  3. Step 3: Cross multiply
    122,353.56x = 168,862.72 × 68,628.42
  4. Step 4: Simplify right side
    122,353.56x = 11,588,781,670.50
  5. Step 5: Solve for x
    x = 11,588,781,670.50/122,353.56
  6. Step 6: Final answer
    x = 94,715.52

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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.