Home / 115,136.19-172,743.51-70,247.42

Finding the Fourth Proportional to 115,136.19, 172,743.51 and 70,247.42

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Solution

The fourth proportional to 115,136.19, 172,743.51 and 70,247.42 is: 105,395.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,136.19 : 172,743.51 = 70,247.42 : x
  2. Step 2: Convert to fraction form
    115,136.19/172,743.51 = 70,247.42/x
  3. Step 3: Cross multiply
    115,136.19x = 172,743.51 × 70,247.42
  4. Step 4: Simplify right side
    115,136.19x = 12,134,785,035.53
  5. Step 5: Solve for x
    x = 12,134,785,035.53/115,136.19
  6. Step 6: Final answer
    x = 105,395.05

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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.