Home / 108,055.35-161,856.97-86,880.73

Finding the Fourth Proportional to 108,055.35, 161,856.97 and 86,880.73

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Solution

The fourth proportional to 108,055.35, 161,856.97 and 86,880.73 is: 130,139.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,055.35 : 161,856.97 = 86,880.73 : x
  2. Step 2: Convert to fraction form
    108,055.35/161,856.97 = 86,880.73/x
  3. Step 3: Cross multiply
    108,055.35x = 161,856.97 × 86,880.73
  4. Step 4: Simplify right side
    108,055.35x = 14,062,251,709.19
  5. Step 5: Solve for x
    x = 14,062,251,709.19/108,055.35
  6. Step 6: Final answer
    x = 130,139.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.