Home / 115,683.45-159,642.03-64,695.60

Finding the Fourth Proportional to 115,683.45, 159,642.03 and 64,695.60

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Solution

The fourth proportional to 115,683.45, 159,642.03 and 64,695.60 is: 89,279.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,683.45 : 159,642.03 = 64,695.60 : x
  2. Step 2: Convert to fraction form
    115,683.45/159,642.03 = 64,695.60/x
  3. Step 3: Cross multiply
    115,683.45x = 159,642.03 × 64,695.60
  4. Step 4: Simplify right side
    115,683.45x = 10,328,136,916.07
  5. Step 5: Solve for x
    x = 10,328,136,916.07/115,683.45
  6. Step 6: Final answer
    x = 89,279.30

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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.