Home / 101,328.96-139,883.04-71,178.24

Finding the Fourth Proportional to 101,328.96, 139,883.04 and 71,178.24

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Solution

The fourth proportional to 101,328.96, 139,883.04 and 71,178.24 is: 98,260.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,328.96 : 139,883.04 = 71,178.24 : x
  2. Step 2: Convert to fraction form
    101,328.96/139,883.04 = 71,178.24/x
  3. Step 3: Cross multiply
    101,328.96x = 139,883.04 × 71,178.24
  4. Step 4: Simplify right side
    101,328.96x = 9,956,628,593.05
  5. Step 5: Solve for x
    x = 9,956,628,593.05/101,328.96
  6. Step 6: Final answer
    x = 98,260.44

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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.