Home / 103,626.71-155,440.05-68,558.16

Finding the Fourth Proportional to 103,626.71, 155,440.05 and 68,558.16

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Solution

The fourth proportional to 103,626.71, 155,440.05 and 68,558.16 is: 102,837.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,626.71 : 155,440.05 = 68,558.16 : x
  2. Step 2: Convert to fraction form
    103,626.71/155,440.05 = 68,558.16/x
  3. Step 3: Cross multiply
    103,626.71x = 155,440.05 × 68,558.16
  4. Step 4: Simplify right side
    103,626.71x = 10,656,683,818.31
  5. Step 5: Solve for x
    x = 10,656,683,818.31/103,626.71
  6. Step 6: Final answer
    x = 102,837.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.