Home / 140,273.10-210,178.80-81,005.40

Finding the Fourth Proportional to 140,273.10, 210,178.80 and 81,005.40

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Solution

The fourth proportional to 140,273.10, 210,178.80 and 81,005.40 is: 121,374.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,273.10 : 210,178.80 = 81,005.40 : x
  2. Step 2: Convert to fraction form
    140,273.10/210,178.80 = 81,005.40/x
  3. Step 3: Cross multiply
    140,273.10x = 210,178.80 × 81,005.40
  4. Step 4: Simplify right side
    140,273.10x = 17,025,617,765.52
  5. Step 5: Solve for x
    x = 17,025,617,765.52/140,273.10
  6. Step 6: Final answer
    x = 121,374.79

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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.