Home / 142,580.77-196,747.99-85,208.68

Finding the Fourth Proportional to 142,580.77, 196,747.99 and 85,208.68

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Solution

The fourth proportional to 142,580.77, 196,747.99 and 85,208.68 is: 117,579.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,580.77 : 196,747.99 = 85,208.68 : x
  2. Step 2: Convert to fraction form
    142,580.77/196,747.99 = 85,208.68/x
  3. Step 3: Cross multiply
    142,580.77x = 196,747.99 × 85,208.68
  4. Step 4: Simplify right side
    142,580.77x = 16,764,636,520.55
  5. Step 5: Solve for x
    x = 16,764,636,520.55/142,580.77
  6. Step 6: Final answer
    x = 117,579.93

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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.