Home / 112,514.88-155,129.40-72,157.44

Finding the Fourth Proportional to 112,514.88, 155,129.40 and 72,157.44

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Solution

The fourth proportional to 112,514.88, 155,129.40 and 72,157.44 is: 99,486.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,514.88 : 155,129.40 = 72,157.44 : x
  2. Step 2: Convert to fraction form
    112,514.88/155,129.40 = 72,157.44/x
  3. Step 3: Cross multiply
    112,514.88x = 155,129.40 × 72,157.44
  4. Step 4: Simplify right side
    112,514.88x = 11,193,740,372.74
  5. Step 5: Solve for x
    x = 11,193,740,372.74/112,514.88
  6. Step 6: Final answer
    x = 99,486.76

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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.