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Finding the Fourth Proportional to 140,235.65, 210,436.70 and 56,035.54

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Solution

The fourth proportional to 140,235.65, 210,436.70 and 56,035.54 is: 84,086.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,235.65 : 210,436.70 = 56,035.54 : x
  2. Step 2: Convert to fraction form
    140,235.65/210,436.70 = 56,035.54/x
  3. Step 3: Cross multiply
    140,235.65x = 210,436.70 × 56,035.54
  4. Step 4: Simplify right side
    140,235.65x = 11,791,933,314.05
  5. Step 5: Solve for x
    x = 11,791,933,314.05/140,235.65
  6. Step 6: Final answer
    x = 84,086.56

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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.