Home / 68,136.16-102,220.70-21,389.04

Finding the Fourth Proportional to 68,136.16, 102,220.70 and 21,389.04

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Solution

The fourth proportional to 68,136.16, 102,220.70 and 21,389.04 is: 32,088.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,136.16 : 102,220.70 = 21,389.04 : x
  2. Step 2: Convert to fraction form
    68,136.16/102,220.70 = 21,389.04/x
  3. Step 3: Cross multiply
    68,136.16x = 102,220.70 × 21,389.04
  4. Step 4: Simplify right side
    68,136.16x = 2,186,402,641.13
  5. Step 5: Solve for x
    x = 2,186,402,641.13/68,136.16
  6. Step 6: Final answer
    x = 32,088.73

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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.