Home / 101,989.20-140,740.52-56,670.36

Finding the Fourth Proportional to 101,989.20, 140,740.52 and 56,670.36

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Solution

The fourth proportional to 101,989.20, 140,740.52 and 56,670.36 is: 78,202.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,989.20 : 140,740.52 = 56,670.36 : x
  2. Step 2: Convert to fraction form
    101,989.20/140,740.52 = 56,670.36/x
  3. Step 3: Cross multiply
    101,989.20x = 140,740.52 × 56,670.36
  4. Step 4: Simplify right side
    101,989.20x = 7,975,815,934.99
  5. Step 5: Solve for x
    x = 7,975,815,934.99/101,989.20
  6. Step 6: Final answer
    x = 78,202.55

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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.