Home / 143,385.68-197,867.06-78,854.36

Finding the Fourth Proportional to 143,385.68, 197,867.06 and 78,854.36

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Solution

The fourth proportional to 143,385.68, 197,867.06 and 78,854.36 is: 108,816.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,385.68 : 197,867.06 = 78,854.36 : x
  2. Step 2: Convert to fraction form
    143,385.68/197,867.06 = 78,854.36/x
  3. Step 3: Cross multiply
    143,385.68x = 197,867.06 × 78,854.36
  4. Step 4: Simplify right side
    143,385.68x = 15,602,680,381.38
  5. Step 5: Solve for x
    x = 15,602,680,381.38/143,385.68
  6. Step 6: Final answer
    x = 108,816.17

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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.