Home / 215,875.31-297,909.23-120,388.05

Finding the Fourth Proportional to 215,875.31, 297,909.23 and 120,388.05

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Solution

The fourth proportional to 215,875.31, 297,909.23 and 120,388.05 is: 166,136.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,875.31 : 297,909.23 = 120,388.05 : x
  2. Step 2: Convert to fraction form
    215,875.31/297,909.23 = 120,388.05/x
  3. Step 3: Cross multiply
    215,875.31x = 297,909.23 × 120,388.05
  4. Step 4: Simplify right side
    215,875.31x = 35,864,711,276.70
  5. Step 5: Solve for x
    x = 35,864,711,276.70/215,875.31
  6. Step 6: Final answer
    x = 166,136.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.