Home / 99,721.74-137,554.83-67,904.94

Finding the Fourth Proportional to 99,721.74, 137,554.83 and 67,904.94

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Solution

The fourth proportional to 99,721.74, 137,554.83 and 67,904.94 is: 93,667.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,721.74 : 137,554.83 = 67,904.94 : x
  2. Step 2: Convert to fraction form
    99,721.74/137,554.83 = 67,904.94/x
  3. Step 3: Cross multiply
    99,721.74x = 137,554.83 × 67,904.94
  4. Step 4: Simplify right side
    99,721.74x = 9,340,652,477.86
  5. Step 5: Solve for x
    x = 9,340,652,477.86/99,721.74
  6. Step 6: Final answer
    x = 93,667.16

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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.