Home / 112,014.40-168,021.60-72,356.80

Finding the Fourth Proportional to 112,014.40, 168,021.60 and 72,356.80

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Solution

The fourth proportional to 112,014.40, 168,021.60 and 72,356.80 is: 108,535.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,014.40 : 168,021.60 = 72,356.80 : x
  2. Step 2: Convert to fraction form
    112,014.40/168,021.60 = 72,356.80/x
  3. Step 3: Cross multiply
    112,014.40x = 168,021.60 × 72,356.80
  4. Step 4: Simplify right side
    112,014.40x = 12,157,505,306.88
  5. Step 5: Solve for x
    x = 12,157,505,306.88/112,014.40
  6. Step 6: Final answer
    x = 108,535.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.