Home / 131,404.20-197,135.10-42,642.60

Finding the Fourth Proportional to 131,404.20, 197,135.10 and 42,642.60

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Solution

The fourth proportional to 131,404.20, 197,135.10 and 42,642.60 is: 63,973.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,404.20 : 197,135.10 = 42,642.60 : x
  2. Step 2: Convert to fraction form
    131,404.20/197,135.10 = 42,642.60/x
  3. Step 3: Cross multiply
    131,404.20x = 197,135.10 × 42,642.60
  4. Step 4: Simplify right side
    131,404.20x = 8,406,353,215.26
  5. Step 5: Solve for x
    x = 8,406,353,215.26/131,404.20
  6. Step 6: Final answer
    x = 63,973.25

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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.