Home / 101,140.72-139,582.11-55,827.70

Finding the Fourth Proportional to 101,140.72, 139,582.11 and 55,827.70

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Solution

The fourth proportional to 101,140.72, 139,582.11 and 55,827.70 is: 77,046.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,140.72 : 139,582.11 = 55,827.70 : x
  2. Step 2: Convert to fraction form
    101,140.72/139,582.11 = 55,827.70/x
  3. Step 3: Cross multiply
    101,140.72x = 139,582.11 × 55,827.70
  4. Step 4: Simplify right side
    101,140.72x = 7,792,548,162.45
  5. Step 5: Solve for x
    x = 7,792,548,162.45/101,140.72
  6. Step 6: Final answer
    x = 77,046.60

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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.