Home / 102,997.05-142,150.33-74,409.20

Finding the Fourth Proportional to 102,997.05, 142,150.33 and 74,409.20

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Solution

The fourth proportional to 102,997.05, 142,150.33 and 74,409.20 is: 102,695.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,997.05 : 142,150.33 = 74,409.20 : x
  2. Step 2: Convert to fraction form
    102,997.05/142,150.33 = 74,409.20/x
  3. Step 3: Cross multiply
    102,997.05x = 142,150.33 × 74,409.20
  4. Step 4: Simplify right side
    102,997.05x = 10,577,291,831.81
  5. Step 5: Solve for x
    x = 10,577,291,831.81/102,997.05
  6. Step 6: Final answer
    x = 102,695.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.