Home / 112,021.80-168,032.70-99,774.60

Finding the Fourth Proportional to 112,021.80, 168,032.70 and 99,774.60

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Solution

The fourth proportional to 112,021.80, 168,032.70 and 99,774.60 is: 149,661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,021.80 : 168,032.70 = 99,774.60 : x
  2. Step 2: Convert to fraction form
    112,021.80/168,032.70 = 99,774.60/x
  3. Step 3: Cross multiply
    112,021.80x = 168,032.70 × 99,774.60
  4. Step 4: Simplify right side
    112,021.80x = 16,765,395,429.42
  5. Step 5: Solve for x
    x = 16,765,395,429.42/112,021.80
  6. Step 6: Final answer
    x = 149,661.90

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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.