Home / 112,845.90-155,656.53-72,611.94

Finding the Fourth Proportional to 112,845.90, 155,656.53 and 72,611.94

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Solution

The fourth proportional to 112,845.90, 155,656.53 and 72,611.94 is: 100,158.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,845.90 : 155,656.53 = 72,611.94 : x
  2. Step 2: Convert to fraction form
    112,845.90/155,656.53 = 72,611.94/x
  3. Step 3: Cross multiply
    112,845.90x = 155,656.53 × 72,611.94
  4. Step 4: Simplify right side
    112,845.90x = 11,302,522,616.97
  5. Step 5: Solve for x
    x = 11,302,522,616.97/112,845.90
  6. Step 6: Final answer
    x = 100,158.91

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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.