Home / 103,611.10-155,493.45-68,539.10

Finding the Fourth Proportional to 103,611.10, 155,493.45 and 68,539.10

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Solution

The fourth proportional to 103,611.10, 155,493.45 and 68,539.10 is: 102,859.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,611.10 : 155,493.45 = 68,539.10 : x
  2. Step 2: Convert to fraction form
    103,611.10/155,493.45 = 68,539.10/x
  3. Step 3: Cross multiply
    103,611.10x = 155,493.45 × 68,539.10
  4. Step 4: Simplify right side
    103,611.10x = 10,657,381,118.90
  5. Step 5: Solve for x
    x = 10,657,381,118.90/103,611.10
  6. Step 6: Final answer
    x = 102,859.45

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1.5x scale

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.