Home / 140,897.10-211,533.30-81,775.20

Finding the Fourth Proportional to 140,897.10, 211,533.30 and 81,775.20

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Solution

The fourth proportional to 140,897.10, 211,533.30 and 81,775.20 is: 122,771.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,897.10 : 211,533.30 = 81,775.20 : x
  2. Step 2: Convert to fraction form
    140,897.10/211,533.30 = 81,775.20/x
  3. Step 3: Cross multiply
    140,897.10x = 211,533.30 × 81,775.20
  4. Step 4: Simplify right side
    140,897.10x = 17,298,177,914.16
  5. Step 5: Solve for x
    x = 17,298,177,914.16/140,897.10
  6. Step 6: Final answer
    x = 122,771.71

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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.