Home / 99,721.83-137,616.93-54,400.17

Finding the Fourth Proportional to 99,721.83, 137,616.93 and 54,400.17

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Solution

The fourth proportional to 99,721.83, 137,616.93 and 54,400.17 is: 75,072.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,721.83 : 137,616.93 = 54,400.17 : x
  2. Step 2: Convert to fraction form
    99,721.83/137,616.93 = 54,400.17/x
  3. Step 3: Cross multiply
    99,721.83x = 137,616.93 × 54,400.17
  4. Step 4: Simplify right side
    99,721.83x = 7,486,384,386.88
  5. Step 5: Solve for x
    x = 7,486,384,386.88/99,721.83
  6. Step 6: Final answer
    x = 75,072.67

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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.