Home / 112,845.40-155,655.84-72,611.44

Finding the Fourth Proportional to 112,845.40, 155,655.84 and 72,611.44

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Solution

The fourth proportional to 112,845.40, 155,655.84 and 72,611.44 is: 100,158.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,845.40 : 155,655.84 = 72,611.44 : x
  2. Step 2: Convert to fraction form
    112,845.40/155,655.84 = 72,611.44/x
  3. Step 3: Cross multiply
    112,845.40x = 155,655.84 × 72,611.44
  4. Step 4: Simplify right side
    112,845.40x = 11,302,394,686.81
  5. Step 5: Solve for x
    x = 11,302,394,686.81/112,845.40
  6. Step 6: Final answer
    x = 100,158.22

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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.