Home / 103,611.96-155,591.28-90,577.44

Finding the Fourth Proportional to 103,611.96, 155,591.28 and 90,577.44

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Solution

The fourth proportional to 103,611.96, 155,591.28 and 90,577.44 is: 136,017.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,611.96 : 155,591.28 = 90,577.44 : x
  2. Step 2: Convert to fraction form
    103,611.96/155,591.28 = 90,577.44/x
  3. Step 3: Cross multiply
    103,611.96x = 155,591.28 × 90,577.44
  4. Step 4: Simplify right side
    103,611.96x = 14,093,059,828.72
  5. Step 5: Solve for x
    x = 14,093,059,828.72/103,611.96
  6. Step 6: Final answer
    x = 136,017.69

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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.