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Finding the Fourth Proportional to 140,650.70, 211,054.95 and 139,582.51

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Solution

The fourth proportional to 140,650.70, 211,054.95 and 139,582.51 is: 209,452.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,650.70 : 211,054.95 = 139,582.51 : x
  2. Step 2: Convert to fraction form
    140,650.70/211,054.95 = 139,582.51/x
  3. Step 3: Cross multiply
    140,650.70x = 211,054.95 × 139,582.51
  4. Step 4: Simplify right side
    140,650.70x = 29,459,579,141.29
  5. Step 5: Solve for x
    x = 29,459,579,141.29/140,650.70
  6. Step 6: Final answer
    x = 209,452.07

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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.