Home / 142,887.85-197,164.13-79,226.10

Finding the Fourth Proportional to 142,887.85, 197,164.13 and 79,226.10

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Solution

The fourth proportional to 142,887.85, 197,164.13 and 79,226.10 is: 109,320.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,887.85 : 197,164.13 = 79,226.10 : x
  2. Step 2: Convert to fraction form
    142,887.85/197,164.13 = 79,226.10/x
  3. Step 3: Cross multiply
    142,887.85x = 197,164.13 × 79,226.10
  4. Step 4: Simplify right side
    142,887.85x = 15,620,544,683.66
  5. Step 5: Solve for x
    x = 15,620,544,683.66/142,887.85
  6. Step 6: Final answer
    x = 109,320.32

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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.