Home / 143,545.96-197,888.13-100,972.36

Finding the Fourth Proportional to 143,545.96, 197,888.13 and 100,972.36

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Solution

The fourth proportional to 143,545.96, 197,888.13 and 100,972.36 is: 139,197.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,545.96 : 197,888.13 = 100,972.36 : x
  2. Step 2: Convert to fraction form
    143,545.96/197,888.13 = 100,972.36/x
  3. Step 3: Cross multiply
    143,545.96x = 197,888.13 × 100,972.36
  4. Step 4: Simplify right side
    143,545.96x = 19,981,231,502.09
  5. Step 5: Solve for x
    x = 19,981,231,502.09/143,545.96
  6. Step 6: Final answer
    x = 139,197.45

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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.