Home / 158,965.21-219,317.72-98,513.79

Finding the Fourth Proportional to 158,965.21, 219,317.72 and 98,513.79

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Solution

The fourth proportional to 158,965.21, 219,317.72 and 98,513.79 is: 135,915.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,965.21 : 219,317.72 = 98,513.79 : x
  2. Step 2: Convert to fraction form
    158,965.21/219,317.72 = 98,513.79/x
  3. Step 3: Cross multiply
    158,965.21x = 219,317.72 × 98,513.79
  4. Step 4: Simplify right side
    158,965.21x = 21,605,820,141.23
  5. Step 5: Solve for x
    x = 21,605,820,141.23/158,965.21
  6. Step 6: Final answer
    x = 135,915.40

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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.