Home / 143,403.38-197,901.46-78,875.34

Finding the Fourth Proportional to 143,403.38, 197,901.46 and 78,875.34

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Solution

The fourth proportional to 143,403.38, 197,901.46 and 78,875.34 is: 108,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,403.38 : 197,901.46 = 78,875.34 : x
  2. Step 2: Convert to fraction form
    143,403.38/197,901.46 = 78,875.34/x
  3. Step 3: Cross multiply
    143,403.38x = 197,901.46 × 78,875.34
  4. Step 4: Simplify right side
    143,403.38x = 15,609,543,560.11
  5. Step 5: Solve for x
    x = 15,609,543,560.11/143,403.38
  6. Step 6: Final answer
    x = 108,850.60

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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.