Home / 140,561.91-210,856.64-45,787.86

Finding the Fourth Proportional to 140,561.91, 210,856.64 and 45,787.86

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Solution

The fourth proportional to 140,561.91, 210,856.64 and 45,787.86 is: 68,686.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,561.91 : 210,856.64 = 45,787.86 : x
  2. Step 2: Convert to fraction form
    140,561.91/210,856.64 = 45,787.86/x
  3. Step 3: Cross multiply
    140,561.91x = 210,856.64 × 45,787.86
  4. Step 4: Simplify right side
    140,561.91x = 9,654,674,083.45
  5. Step 5: Solve for x
    x = 9,654,674,083.45/140,561.91
  6. Step 6: Final answer
    x = 68,686.28

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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.