Home / 143,278.55-197,715.35-79,612.55

Finding the Fourth Proportional to 143,278.55, 197,715.35 and 79,612.55

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Solution

The fourth proportional to 143,278.55, 197,715.35 and 79,612.55 is: 109,860.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,278.55 : 197,715.35 = 79,612.55 : x
  2. Step 2: Convert to fraction form
    143,278.55/197,715.35 = 79,612.55/x
  3. Step 3: Cross multiply
    143,278.55x = 197,715.35 × 79,612.55
  4. Step 4: Simplify right side
    143,278.55x = 15,740,622,398.10
  5. Step 5: Solve for x
    x = 15,740,622,398.10/143,278.55
  6. Step 6: Final answer
    x = 109,860.29

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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.