Home / 140,495.20-210,640.40-57,346.40

Finding the Fourth Proportional to 140,495.20, 210,640.40 and 57,346.40

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Solution

The fourth proportional to 140,495.20, 210,640.40 and 57,346.40 is: 85,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,495.20 : 210,640.40 = 57,346.40 : x
  2. Step 2: Convert to fraction form
    140,495.20/210,640.40 = 57,346.40/x
  3. Step 3: Cross multiply
    140,495.20x = 210,640.40 × 57,346.40
  4. Step 4: Simplify right side
    140,495.20x = 12,079,468,634.56
  5. Step 5: Solve for x
    x = 12,079,468,634.56/140,495.20
  6. Step 6: Final answer
    x = 85,977.80

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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.