Home / 157,867.36-217,872-86,258.20

Finding the Fourth Proportional to 157,867.36, 217,872 and 86,258.20

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Solution

The fourth proportional to 157,867.36, 217,872 and 86,258.20 is: 119,044.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,867.36 : 217,872 = 86,258.20 : x
  2. Step 2: Convert to fraction form
    157,867.36/217,872 = 86,258.20/x
  3. Step 3: Cross multiply
    157,867.36x = 217,872 × 86,258.20
  4. Step 4: Simplify right side
    157,867.36x = 18,793,246,550.40
  5. Step 5: Solve for x
    x = 18,793,246,550.40/157,867.36
  6. Step 6: Final answer
    x = 119,044.54

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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.