Home / 143,272.17-197,711.67-79,608.33

Finding the Fourth Proportional to 143,272.17, 197,711.67 and 79,608.33

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Solution

The fourth proportional to 143,272.17, 197,711.67 and 79,608.33 is: 109,857.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,272.17 : 197,711.67 = 79,608.33 : x
  2. Step 2: Convert to fraction form
    143,272.17/197,711.67 = 79,608.33/x
  3. Step 3: Cross multiply
    143,272.17x = 197,711.67 × 79,608.33
  4. Step 4: Simplify right side
    143,272.17x = 15,739,495,870.21
  5. Step 5: Solve for x
    x = 15,739,495,870.21/143,272.17
  6. Step 6: Final answer
    x = 109,857.31

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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.