Home / 143,331.32-197,799.57-78,803.28

Finding the Fourth Proportional to 143,331.32, 197,799.57 and 78,803.28

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Solution

The fourth proportional to 143,331.32, 197,799.57 and 78,803.28 is: 108,749.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,331.32 : 197,799.57 = 78,803.28 : x
  2. Step 2: Convert to fraction form
    143,331.32/197,799.57 = 78,803.28/x
  3. Step 3: Cross multiply
    143,331.32x = 197,799.57 × 78,803.28
  4. Step 4: Simplify right side
    143,331.32x = 15,587,254,898.59
  5. Step 5: Solve for x
    x = 15,587,254,898.59/143,331.32
  6. Step 6: Final answer
    x = 108,749.82

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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.