Home / 112,038.40-168,057.60-72,380.80

Finding the Fourth Proportional to 112,038.40, 168,057.60 and 72,380.80

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Solution

The fourth proportional to 112,038.40, 168,057.60 and 72,380.80 is: 108,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,038.40 : 168,057.60 = 72,380.80 : x
  2. Step 2: Convert to fraction form
    112,038.40/168,057.60 = 72,380.80/x
  3. Step 3: Cross multiply
    112,038.40x = 168,057.60 × 72,380.80
  4. Step 4: Simplify right side
    112,038.40x = 12,164,143,534.08
  5. Step 5: Solve for x
    x = 12,164,143,534.08/112,038.40
  6. Step 6: Final answer
    x = 108,571.20

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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.