Home / 143,327.09-197,790.21-77,915.49

Finding the Fourth Proportional to 143,327.09, 197,790.21 and 77,915.49

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Solution

The fourth proportional to 143,327.09, 197,790.21 and 77,915.49 is: 107,522.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,327.09 : 197,790.21 = 77,915.49 : x
  2. Step 2: Convert to fraction form
    143,327.09/197,790.21 = 77,915.49/x
  3. Step 3: Cross multiply
    143,327.09x = 197,790.21 × 77,915.49
  4. Step 4: Simplify right side
    143,327.09x = 15,410,921,129.35
  5. Step 5: Solve for x
    x = 15,410,921,129.35/143,327.09
  6. Step 6: Final answer
    x = 107,522.74

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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.