Home / 151,442.16-208,982.70-87,800.64

Finding the Fourth Proportional to 151,442.16, 208,982.70 and 87,800.64

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Solution

The fourth proportional to 151,442.16, 208,982.70 and 87,800.64 is: 121,160.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,442.16 : 208,982.70 = 87,800.64 : x
  2. Step 2: Convert to fraction form
    151,442.16/208,982.70 = 87,800.64/x
  3. Step 3: Cross multiply
    151,442.16x = 208,982.70 × 87,800.64
  4. Step 4: Simplify right side
    151,442.16x = 18,348,814,808.93
  5. Step 5: Solve for x
    x = 18,348,814,808.93/151,442.16
  6. Step 6: Final answer
    x = 121,160.55

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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.