Home / 112,543.37-155,236.64-72,193.22

Finding the Fourth Proportional to 112,543.37, 155,236.64 and 72,193.22

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Solution

The fourth proportional to 112,543.37, 155,236.64 and 72,193.22 is: 99,579.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,543.37 : 155,236.64 = 72,193.22 : x
  2. Step 2: Convert to fraction form
    112,543.37/155,236.64 = 72,193.22/x
  3. Step 3: Cross multiply
    112,543.37x = 155,236.64 × 72,193.22
  4. Step 4: Simplify right side
    112,543.37x = 11,207,031,766.43
  5. Step 5: Solve for x
    x = 11,207,031,766.43/112,543.37
  6. Step 6: Final answer
    x = 99,579.68

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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.