Home / 145,136.13-217,706.50-55,180.21

Finding the Fourth Proportional to 145,136.13, 217,706.50 and 55,180.21

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Solution

The fourth proportional to 145,136.13, 217,706.50 and 55,180.21 is: 82,771.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,136.13 : 217,706.50 = 55,180.21 : x
  2. Step 2: Convert to fraction form
    145,136.13/217,706.50 = 55,180.21/x
  3. Step 3: Cross multiply
    145,136.13x = 217,706.50 × 55,180.21
  4. Step 4: Simplify right side
    145,136.13x = 12,013,090,112.46
  5. Step 5: Solve for x
    x = 12,013,090,112.46/145,136.13
  6. Step 6: Final answer
    x = 82,771.19

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1.5x scale

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.