Home / 159,350.64-219,899.63-87,731.20

Finding the Fourth Proportional to 159,350.64, 219,899.63 and 87,731.20

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Solution

The fourth proportional to 159,350.64, 219,899.63 and 87,731.20 is: 121,066.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,350.64 : 219,899.63 = 87,731.20 : x
  2. Step 2: Convert to fraction form
    159,350.64/219,899.63 = 87,731.20/x
  3. Step 3: Cross multiply
    159,350.64x = 219,899.63 × 87,731.20
  4. Step 4: Simplify right side
    159,350.64x = 19,292,058,419.46
  5. Step 5: Solve for x
    x = 19,292,058,419.46/159,350.64
  6. Step 6: Final answer
    x = 121,066.71

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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.