Home / 101,378.16-139,896.20-56,053.41

Finding the Fourth Proportional to 101,378.16, 139,896.20 and 56,053.41

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Solution

The fourth proportional to 101,378.16, 139,896.20 and 56,053.41 is: 77,350.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,378.16 : 139,896.20 = 56,053.41 : x
  2. Step 2: Convert to fraction form
    101,378.16/139,896.20 = 56,053.41/x
  3. Step 3: Cross multiply
    101,378.16x = 139,896.20 × 56,053.41
  4. Step 4: Simplify right side
    101,378.16x = 7,841,658,775.77
  5. Step 5: Solve for x
    x = 7,841,658,775.77/101,378.16
  6. Step 6: Final answer
    x = 77,350.57

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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.