Home / 107,910.20-161,865.30-70,585.40

Finding the Fourth Proportional to 107,910.20, 161,865.30 and 70,585.40

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Solution

The fourth proportional to 107,910.20, 161,865.30 and 70,585.40 is: 105,878.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,910.20 : 161,865.30 = 70,585.40 : x
  2. Step 2: Convert to fraction form
    107,910.20/161,865.30 = 70,585.40/x
  3. Step 3: Cross multiply
    107,910.20x = 161,865.30 × 70,585.40
  4. Step 4: Simplify right side
    107,910.20x = 11,425,326,946.62
  5. Step 5: Solve for x
    x = 11,425,326,946.62/107,910.20
  6. Step 6: Final answer
    x = 105,878.10

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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.