Home / 151,019.60-208,383.72-87,363.32

Finding the Fourth Proportional to 151,019.60, 208,383.72 and 87,363.32

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Solution

The fourth proportional to 151,019.60, 208,383.72 and 87,363.32 is: 120,547.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,019.60 : 208,383.72 = 87,363.32 : x
  2. Step 2: Convert to fraction form
    151,019.60/208,383.72 = 87,363.32/x
  3. Step 3: Cross multiply
    151,019.60x = 208,383.72 × 87,363.32
  4. Step 4: Simplify right side
    151,019.60x = 18,205,093,613.15
  5. Step 5: Solve for x
    x = 18,205,093,613.15/151,019.60
  6. Step 6: Final answer
    x = 120,547.89

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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.