Home / 115,684.45-159,643.41-64,696.60

Finding the Fourth Proportional to 115,684.45, 159,643.41 and 64,696.60

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Solution

The fourth proportional to 115,684.45, 159,643.41 and 64,696.60 is: 89,280.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,684.45 : 159,643.41 = 64,696.60 : x
  2. Step 2: Convert to fraction form
    115,684.45/159,643.41 = 64,696.60/x
  3. Step 3: Cross multiply
    115,684.45x = 159,643.41 × 64,696.60
  4. Step 4: Simplify right side
    115,684.45x = 10,328,385,839.41
  5. Step 5: Solve for x
    x = 10,328,385,839.41/115,684.45
  6. Step 6: Final answer
    x = 89,280.68

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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.