Home / 112,823.30-155,368.04-105,611.21

Finding the Fourth Proportional to 112,823.30, 155,368.04 and 105,611.21

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Solution

The fourth proportional to 112,823.30, 155,368.04 and 105,611.21 is: 145,436.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,823.30 : 155,368.04 = 105,611.21 : x
  2. Step 2: Convert to fraction form
    112,823.30/155,368.04 = 105,611.21/x
  3. Step 3: Cross multiply
    112,823.30x = 155,368.04 × 105,611.21
  4. Step 4: Simplify right side
    112,823.30x = 16,408,606,571.53
  5. Step 5: Solve for x
    x = 16,408,606,571.53/112,823.30
  6. Step 6: Final answer
    x = 145,436.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.