Home / 101,153.21-139,581.49-55,828.28

Finding the Fourth Proportional to 101,153.21, 139,581.49 and 55,828.28

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Solution

The fourth proportional to 101,153.21, 139,581.49 and 55,828.28 is: 77,037.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,153.21 : 139,581.49 = 55,828.28 : x
  2. Step 2: Convert to fraction form
    101,153.21/139,581.49 = 55,828.28/x
  3. Step 3: Cross multiply
    101,153.21x = 139,581.49 × 55,828.28
  4. Step 4: Simplify right side
    101,153.21x = 7,792,594,271.01
  5. Step 5: Solve for x
    x = 7,792,594,271.01/101,153.21
  6. Step 6: Final answer
    x = 77,037.54

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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.