Home / 143,579.64-198,139.88-79,916.06

Finding the Fourth Proportional to 143,579.64, 198,139.88 and 79,916.06

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Solution

The fourth proportional to 143,579.64, 198,139.88 and 79,916.06 is: 110,284.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,579.64 : 198,139.88 = 79,916.06 : x
  2. Step 2: Convert to fraction form
    143,579.64/198,139.88 = 79,916.06/x
  3. Step 3: Cross multiply
    143,579.64x = 198,139.88 × 79,916.06
  4. Step 4: Simplify right side
    143,579.64x = 15,834,558,538.47
  5. Step 5: Solve for x
    x = 15,834,558,538.47/143,579.64
  6. Step 6: Final answer
    x = 110,284.15

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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.