Home / 115,132.44-172,737.87-70,243.68

Finding the Fourth Proportional to 115,132.44, 172,737.87 and 70,243.68

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Solution

The fourth proportional to 115,132.44, 172,737.87 and 70,243.68 is: 105,389.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,132.44 : 172,737.87 = 70,243.68 : x
  2. Step 2: Convert to fraction form
    115,132.44/172,737.87 = 70,243.68/x
  3. Step 3: Cross multiply
    115,132.44x = 172,737.87 × 70,243.68
  4. Step 4: Simplify right side
    115,132.44x = 12,133,743,664.16
  5. Step 5: Solve for x
    x = 12,133,743,664.16/115,132.44
  6. Step 6: Final answer
    x = 105,389.44

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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.