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Finding the Fourth Proportional to 105,596.28, 145,748.43 and 65,285.73

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Solution

The fourth proportional to 105,596.28, 145,748.43 and 65,285.73 is: 90,110.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,596.28 : 145,748.43 = 65,285.73 : x
  2. Step 2: Convert to fraction form
    105,596.28/145,748.43 = 65,285.73/x
  3. Step 3: Cross multiply
    105,596.28x = 145,748.43 × 65,285.73
  4. Step 4: Simplify right side
    105,596.28x = 9,515,292,648.90
  5. Step 5: Solve for x
    x = 9,515,292,648.90/105,596.28
  6. Step 6: Final answer
    x = 90,110.11

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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.