Home / 120,722.40-181,107.90-101,136.60

Finding the Fourth Proportional to 120,722.40, 181,107.90 and 101,136.60

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Solution

The fourth proportional to 120,722.40, 181,107.90 and 101,136.60 is: 151,725.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,722.40 : 181,107.90 = 101,136.60 : x
  2. Step 2: Convert to fraction form
    120,722.40/181,107.90 = 101,136.60/x
  3. Step 3: Cross multiply
    120,722.40x = 181,107.90 × 101,136.60
  4. Step 4: Simplify right side
    120,722.40x = 18,316,637,239.14
  5. Step 5: Solve for x
    x = 18,316,637,239.14/120,722.40
  6. Step 6: Final answer
    x = 151,725.26

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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.