Home / 142,305.05-196,381.58-77,775.59

Finding the Fourth Proportional to 142,305.05, 196,381.58 and 77,775.59

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Solution

The fourth proportional to 142,305.05, 196,381.58 and 77,775.59 is: 107,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,305.05 : 196,381.58 = 77,775.59 : x
  2. Step 2: Convert to fraction form
    142,305.05/196,381.58 = 77,775.59/x
  3. Step 3: Cross multiply
    142,305.05x = 196,381.58 × 77,775.59
  4. Step 4: Simplify right side
    142,305.05x = 15,273,691,878.85
  5. Step 5: Solve for x
    x = 15,273,691,878.85/142,305.05
  6. Step 6: Final answer
    x = 107,330.64

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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.