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Finding the Fourth Proportional to 140,556.42, 210,717.99 and 65,637.90

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Solution

The fourth proportional to 140,556.42, 210,717.99 and 65,637.90 is: 98,402.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,556.42 : 210,717.99 = 65,637.90 : x
  2. Step 2: Convert to fraction form
    140,556.42/210,717.99 = 65,637.90/x
  3. Step 3: Cross multiply
    140,556.42x = 210,717.99 × 65,637.90
  4. Step 4: Simplify right side
    140,556.42x = 13,831,086,355.82
  5. Step 5: Solve for x
    x = 13,831,086,355.82/140,556.42
  6. Step 6: Final answer
    x = 98,402.38

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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.