Home / 143,416.36-197,874.57-86,019.76

Finding the Fourth Proportional to 143,416.36, 197,874.57 and 86,019.76

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Solution

The fourth proportional to 143,416.36, 197,874.57 and 86,019.76 is: 118,683.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,416.36 : 197,874.57 = 86,019.76 : x
  2. Step 2: Convert to fraction form
    143,416.36/197,874.57 = 86,019.76/x
  3. Step 3: Cross multiply
    143,416.36x = 197,874.57 × 86,019.76
  4. Step 4: Simplify right side
    143,416.36x = 17,021,123,021.50
  5. Step 5: Solve for x
    x = 17,021,123,021.50/143,416.36
  6. Step 6: Final answer
    x = 118,683.27

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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.