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Finding the Fourth Proportional to 138,545.51, 207,900.35 and 58,579.11

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Solution

The fourth proportional to 138,545.51, 207,900.35 and 58,579.11 is: 87,903.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,545.51 : 207,900.35 = 58,579.11 : x
  2. Step 2: Convert to fraction form
    138,545.51/207,900.35 = 58,579.11/x
  3. Step 3: Cross multiply
    138,545.51x = 207,900.35 × 58,579.11
  4. Step 4: Simplify right side
    138,545.51x = 12,178,616,648.99
  5. Step 5: Solve for x
    x = 12,178,616,648.99/138,545.51
  6. Step 6: Final answer
    x = 87,903.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.