Home / 140,807.10-211,271.40-81,693.30

Finding the Fourth Proportional to 140,807.10, 211,271.40 and 81,693.30

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Solution

The fourth proportional to 140,807.10, 211,271.40 and 81,693.30 is: 122,575.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,807.10 : 211,271.40 = 81,693.30 : x
  2. Step 2: Convert to fraction form
    140,807.10/211,271.40 = 81,693.30/x
  3. Step 3: Cross multiply
    140,807.10x = 211,271.40 × 81,693.30
  4. Step 4: Simplify right side
    140,807.10x = 17,259,457,861.62
  5. Step 5: Solve for x
    x = 17,259,457,861.62/140,807.10
  6. Step 6: Final answer
    x = 122,575.20

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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.