Home / 151,364.12-208,873.32-87,690.92

Finding the Fourth Proportional to 151,364.12, 208,873.32 and 87,690.92

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Solution

The fourth proportional to 151,364.12, 208,873.32 and 87,690.92 is: 121,008.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,364.12 : 208,873.32 = 87,690.92 : x
  2. Step 2: Convert to fraction form
    151,364.12/208,873.32 = 87,690.92/x
  3. Step 3: Cross multiply
    151,364.12x = 208,873.32 × 87,690.92
  4. Step 4: Simplify right side
    151,364.12x = 18,316,293,594.25
  5. Step 5: Solve for x
    x = 18,316,293,594.25/151,364.12
  6. Step 6: Final answer
    x = 121,008.16

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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.