Home / 143,122.59-197,501.47-79,456.29

Finding the Fourth Proportional to 143,122.59, 197,501.47 and 79,456.29

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Solution

The fourth proportional to 143,122.59, 197,501.47 and 79,456.29 is: 109,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,122.59 : 197,501.47 = 79,456.29 : x
  2. Step 2: Convert to fraction form
    143,122.59/197,501.47 = 79,456.29/x
  3. Step 3: Cross multiply
    143,122.59x = 197,501.47 × 79,456.29
  4. Step 4: Simplify right side
    143,122.59x = 15,692,733,803.68
  5. Step 5: Solve for x
    x = 15,692,733,803.68/143,122.59
  6. Step 6: Final answer
    x = 109,645.40

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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.