Home / 151,433.91-208,971.32-87,792.39

Finding the Fourth Proportional to 151,433.91, 208,971.32 and 87,792.39

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Solution

The fourth proportional to 151,433.91, 208,971.32 and 87,792.39 is: 121,149.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,433.91 : 208,971.32 = 87,792.39 : x
  2. Step 2: Convert to fraction form
    151,433.91/208,971.32 = 87,792.39/x
  3. Step 3: Cross multiply
    151,433.91x = 208,971.32 × 87,792.39
  4. Step 4: Simplify right side
    151,433.91x = 18,346,091,185.29
  5. Step 5: Solve for x
    x = 18,346,091,185.29/151,433.91
  6. Step 6: Final answer
    x = 121,149.16

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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.