Home / 143,019.36-197,366.09-79,357.01

Finding the Fourth Proportional to 143,019.36, 197,366.09 and 79,357.01

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Solution

The fourth proportional to 143,019.36, 197,366.09 and 79,357.01 is: 109,512.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,019.36 : 197,366.09 = 79,357.01 : x
  2. Step 2: Convert to fraction form
    143,019.36/197,366.09 = 79,357.01/x
  3. Step 3: Cross multiply
    143,019.36x = 197,366.09 × 79,357.01
  4. Step 4: Simplify right side
    143,019.36x = 15,662,381,394.18
  5. Step 5: Solve for x
    x = 15,662,381,394.18/143,019.36
  6. Step 6: Final answer
    x = 109,512.32

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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.