Home / 112,646.88-155,311.56-72,289.44

Finding the Fourth Proportional to 112,646.88, 155,311.56 and 72,289.44

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Solution

The fourth proportional to 112,646.88, 155,311.56 and 72,289.44 is: 99,668.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,646.88 : 155,311.56 = 72,289.44 : x
  2. Step 2: Convert to fraction form
    112,646.88/155,311.56 = 72,289.44/x
  3. Step 3: Cross multiply
    112,646.88x = 155,311.56 × 72,289.44
  4. Step 4: Simplify right side
    112,646.88x = 11,227,385,697.93
  5. Step 5: Solve for x
    x = 11,227,385,697.93/112,646.88
  6. Step 6: Final answer
    x = 99,668.86

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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.