Home / 112,467.60-155,143.84-72,136.48

Finding the Fourth Proportional to 112,467.60, 155,143.84 and 72,136.48

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Solution

The fourth proportional to 112,467.60, 155,143.84 and 72,136.48 is: 99,508.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,467.60 : 155,143.84 = 72,136.48 : x
  2. Step 2: Convert to fraction form
    112,467.60/155,143.84 = 72,136.48/x
  3. Step 3: Cross multiply
    112,467.60x = 155,143.84 × 72,136.48
  4. Step 4: Simplify right side
    112,467.60x = 11,191,530,511.28
  5. Step 5: Solve for x
    x = 11,191,530,511.28/112,467.60
  6. Step 6: Final answer
    x = 99,508.93

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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.