Home / 101,445.09-139,991.18-56,120.43

Finding the Fourth Proportional to 101,445.09, 139,991.18 and 56,120.43

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Solution

The fourth proportional to 101,445.09, 139,991.18 and 56,120.43 is: 77,444.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,445.09 : 139,991.18 = 56,120.43 : x
  2. Step 2: Convert to fraction form
    101,445.09/139,991.18 = 56,120.43/x
  3. Step 3: Cross multiply
    101,445.09x = 139,991.18 × 56,120.43
  4. Step 4: Simplify right side
    101,445.09x = 7,856,364,937.21
  5. Step 5: Solve for x
    x = 7,856,364,937.21/101,445.09
  6. Step 6: Final answer
    x = 77,444.51

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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.