Home / 143,569.75-198,122.75-79,038.46

Finding the Fourth Proportional to 143,569.75, 198,122.75 and 79,038.46

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Solution

The fourth proportional to 143,569.75, 198,122.75 and 79,038.46 is: 109,071.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,569.75 : 198,122.75 = 79,038.46 : x
  2. Step 2: Convert to fraction form
    143,569.75/198,122.75 = 79,038.46/x
  3. Step 3: Cross multiply
    143,569.75x = 198,122.75 × 79,038.46
  4. Step 4: Simplify right side
    143,569.75x = 15,659,317,050.97
  5. Step 5: Solve for x
    x = 15,659,317,050.97/143,569.75
  6. Step 6: Final answer
    x = 109,071.15

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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.