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Finding the Fourth Proportional to 140,593.68, 210,890.48 and 70,456.56

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Solution

The fourth proportional to 140,593.68, 210,890.48 and 70,456.56 is: 105,684.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,593.68 : 210,890.48 = 70,456.56 : x
  2. Step 2: Convert to fraction form
    140,593.68/210,890.48 = 70,456.56/x
  3. Step 3: Cross multiply
    140,593.68x = 210,890.48 × 70,456.56
  4. Step 4: Simplify right side
    140,593.68x = 14,858,617,757.55
  5. Step 5: Solve for x
    x = 14,858,617,757.55/140,593.68
  6. Step 6: Final answer
    x = 105,684.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.