Home / 142,579.77-196,746.62-85,207.68

Finding the Fourth Proportional to 142,579.77, 196,746.62 and 85,207.68

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Solution

The fourth proportional to 142,579.77, 196,746.62 and 85,207.68 is: 117,578.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,579.77 : 196,746.62 = 85,207.68 : x
  2. Step 2: Convert to fraction form
    142,579.77/196,746.62 = 85,207.68/x
  3. Step 3: Cross multiply
    142,579.77x = 196,746.62 × 85,207.68
  4. Step 4: Simplify right side
    142,579.77x = 16,764,322,612.00
  5. Step 5: Solve for x
    x = 16,764,322,612.00/142,579.77
  6. Step 6: Final answer
    x = 117,578.55

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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.