Home / 101,972.29-140,744.27-56,665.86

Finding the Fourth Proportional to 101,972.29, 140,744.27 and 56,665.86

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Solution

The fourth proportional to 101,972.29, 140,744.27 and 56,665.86 is: 78,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,972.29 : 140,744.27 = 56,665.86 : x
  2. Step 2: Convert to fraction form
    101,972.29/140,744.27 = 56,665.86/x
  3. Step 3: Cross multiply
    101,972.29x = 140,744.27 × 56,665.86
  4. Step 4: Simplify right side
    101,972.29x = 7,975,395,099.62
  5. Step 5: Solve for x
    x = 7,975,395,099.62/101,972.29
  6. Step 6: Final answer
    x = 78,211.40

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1.5x scale

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.