Home / 143,441.64-197,946.48-78,908.16

Finding the Fourth Proportional to 143,441.64, 197,946.48 and 78,908.16

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Solution

The fourth proportional to 143,441.64, 197,946.48 and 78,908.16 is: 108,891.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,441.64 : 197,946.48 = 78,908.16 : x
  2. Step 2: Convert to fraction form
    143,441.64/197,946.48 = 78,908.16/x
  3. Step 3: Cross multiply
    143,441.64x = 197,946.48 × 78,908.16
  4. Step 4: Simplify right side
    143,441.64x = 15,619,592,515.28
  5. Step 5: Solve for x
    x = 15,619,592,515.28/143,441.64
  6. Step 6: Final answer
    x = 108,891.62

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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.