Home / 143,056.32-197,420.96-79,398.21

Finding the Fourth Proportional to 143,056.32, 197,420.96 and 79,398.21

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Solution

The fourth proportional to 143,056.32, 197,420.96 and 79,398.21 is: 109,571.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,056.32 : 197,420.96 = 79,398.21 : x
  2. Step 2: Convert to fraction form
    143,056.32/197,420.96 = 79,398.21/x
  3. Step 3: Cross multiply
    143,056.32x = 197,420.96 × 79,398.21
  4. Step 4: Simplify right side
    143,056.32x = 15,674,870,840.48
  5. Step 5: Solve for x
    x = 15,674,870,840.48/143,056.32
  6. Step 6: Final answer
    x = 109,571.33

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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.