Home / 101,743.09-140,402.80-56,420.96

Finding the Fourth Proportional to 101,743.09, 140,402.80 and 56,420.96

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Solution

The fourth proportional to 101,743.09, 140,402.80 and 56,420.96 is: 77,859.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,743.09 : 140,402.80 = 56,420.96 : x
  2. Step 2: Convert to fraction form
    101,743.09/140,402.80 = 56,420.96/x
  3. Step 3: Cross multiply
    101,743.09x = 140,402.80 × 56,420.96
  4. Step 4: Simplify right side
    101,743.09x = 7,921,660,131.20
  5. Step 5: Solve for x
    x = 7,921,660,131.20/101,743.09
  6. Step 6: Final answer
    x = 77,859.44

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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.