Home / 143,330.36-197,779.82-85,972.02

Finding the Fourth Proportional to 143,330.36, 197,779.82 and 85,972.02

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Solution

The fourth proportional to 143,330.36, 197,779.82 and 85,972.02 is: 118,631.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,330.36 : 197,779.82 = 85,972.02 : x
  2. Step 2: Convert to fraction form
    143,330.36/197,779.82 = 85,972.02/x
  3. Step 3: Cross multiply
    143,330.36x = 197,779.82 × 85,972.02
  4. Step 4: Simplify right side
    143,330.36x = 17,003,530,640.64
  5. Step 5: Solve for x
    x = 17,003,530,640.64/143,330.36
  6. Step 6: Final answer
    x = 118,631.74

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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.