Home / 151,004.64-208,410.48-87,381.12

Finding the Fourth Proportional to 151,004.64, 208,410.48 and 87,381.12

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Solution

The fourth proportional to 151,004.64, 208,410.48 and 87,381.12 is: 120,599.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,004.64 : 208,410.48 = 87,381.12 : x
  2. Step 2: Convert to fraction form
    151,004.64/208,410.48 = 87,381.12/x
  3. Step 3: Cross multiply
    151,004.64x = 208,410.48 × 87,381.12
  4. Step 4: Simplify right side
    151,004.64x = 18,211,141,162.14
  5. Step 5: Solve for x
    x = 18,211,141,162.14/151,004.64
  6. Step 6: Final answer
    x = 120,599.88

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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.