Home / 143,057.16-197,281.74-85,687.32

Finding the Fourth Proportional to 143,057.16, 197,281.74 and 85,687.32

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Solution

The fourth proportional to 143,057.16, 197,281.74 and 85,687.32 is: 118,166.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,057.16 : 197,281.74 = 85,687.32 : x
  2. Step 2: Convert to fraction form
    143,057.16/197,281.74 = 85,687.32/x
  3. Step 3: Cross multiply
    143,057.16x = 197,281.74 × 85,687.32
  4. Step 4: Simplify right side
    143,057.16x = 16,904,543,585.54
  5. Step 5: Solve for x
    x = 16,904,543,585.54/143,057.16
  6. Step 6: Final answer
    x = 118,166.36

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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.