Home / 151,451.16-208,995.12-87,809.64

Finding the Fourth Proportional to 151,451.16, 208,995.12 and 87,809.64

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Solution

The fourth proportional to 151,451.16, 208,995.12 and 87,809.64 is: 121,172.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,451.16 : 208,995.12 = 87,809.64 : x
  2. Step 2: Convert to fraction form
    151,451.16/208,995.12 = 87,809.64/x
  3. Step 3: Cross multiply
    151,451.16x = 208,995.12 × 87,809.64
  4. Step 4: Simplify right side
    151,451.16x = 18,351,786,248.96
  5. Step 5: Solve for x
    x = 18,351,786,248.96/151,451.16
  6. Step 6: Final answer
    x = 121,172.97

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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.