Home / 143,091.71-197,487.10-85,733.30

Finding the Fourth Proportional to 143,091.71, 197,487.10 and 85,733.30

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Solution

The fourth proportional to 143,091.71, 197,487.10 and 85,733.30 is: 118,324.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,091.71 : 197,487.10 = 85,733.30 : x
  2. Step 2: Convert to fraction form
    143,091.71/197,487.10 = 85,733.30/x
  3. Step 3: Cross multiply
    143,091.71x = 197,487.10 × 85,733.30
  4. Step 4: Simplify right side
    143,091.71x = 16,931,221,069.81
  5. Step 5: Solve for x
    x = 16,931,221,069.81/143,091.71
  6. Step 6: Final answer
    x = 118,324.27

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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.