Home / 140,511.90-210,330.45-81,171.30

Finding the Fourth Proportional to 140,511.90, 210,330.45 and 81,171.30

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Solution

The fourth proportional to 140,511.90, 210,330.45 and 81,171.30 is: 121,504.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,511.90 : 210,330.45 = 81,171.30 : x
  2. Step 2: Convert to fraction form
    140,511.90/210,330.45 = 81,171.30/x
  3. Step 3: Cross multiply
    140,511.90x = 210,330.45 × 81,171.30
  4. Step 4: Simplify right side
    140,511.90x = 17,072,796,056.09
  5. Step 5: Solve for x
    x = 17,072,796,056.09/140,511.90
  6. Step 6: Final answer
    x = 121,504.27

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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.