Home / 143,060.48-197,421-79,400.96

Finding the Fourth Proportional to 143,060.48, 197,421 and 79,400.96

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Solution

The fourth proportional to 143,060.48, 197,421 and 79,400.96 is: 109,571.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,060.48 : 197,421 = 79,400.96 : x
  2. Step 2: Convert to fraction form
    143,060.48/197,421 = 79,400.96/x
  3. Step 3: Cross multiply
    143,060.48x = 197,421 × 79,400.96
  4. Step 4: Simplify right side
    143,060.48x = 15,675,416,924.16
  5. Step 5: Solve for x
    x = 15,675,416,924.16/143,060.48
  6. Step 6: Final answer
    x = 109,571.96

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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.