Home / 143,283.34-197,732.80-78,759.62

Finding the Fourth Proportional to 143,283.34, 197,732.80 and 78,759.62

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Solution

The fourth proportional to 143,283.34, 197,732.80 and 78,759.62 is: 108,689.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,283.34 : 197,732.80 = 78,759.62 : x
  2. Step 2: Convert to fraction form
    143,283.34/197,732.80 = 78,759.62/x
  3. Step 3: Cross multiply
    143,283.34x = 197,732.80 × 78,759.62
  4. Step 4: Simplify right side
    143,283.34x = 15,573,360,189.54
  5. Step 5: Solve for x
    x = 15,573,360,189.54/143,283.34
  6. Step 6: Final answer
    x = 108,689.26

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1.5x scale

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.