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Finding the Fourth Proportional to 163,361.95, 245,139.21 and 68,608.76

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Solution

The fourth proportional to 163,361.95, 245,139.21 and 68,608.76 is: 102,953.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,361.95 : 245,139.21 = 68,608.76 : x
  2. Step 2: Convert to fraction form
    163,361.95/245,139.21 = 68,608.76/x
  3. Step 3: Cross multiply
    163,361.95x = 245,139.21 × 68,608.76
  4. Step 4: Simplify right side
    163,361.95x = 16,818,695,999.78
  5. Step 5: Solve for x
    x = 16,818,695,999.78/163,361.95
  6. Step 6: Final answer
    x = 102,953.57

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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.