Home / 142,453.35-196,579.17-77,921.46

Finding the Fourth Proportional to 142,453.35, 196,579.17 and 77,921.46

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Solution

The fourth proportional to 142,453.35, 196,579.17 and 77,921.46 is: 107,528.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,453.35 : 196,579.17 = 77,921.46 : x
  2. Step 2: Convert to fraction form
    142,453.35/196,579.17 = 77,921.46/x
  3. Step 3: Cross multiply
    142,453.35x = 196,579.17 × 77,921.46
  4. Step 4: Simplify right side
    142,453.35x = 15,317,735,931.99
  5. Step 5: Solve for x
    x = 15,317,735,931.99/142,453.35
  6. Step 6: Final answer
    x = 107,528.09

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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.