Home / 112,140.70-168,211.05-99,674.80

Finding the Fourth Proportional to 112,140.70, 168,211.05 and 99,674.80

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Solution

The fourth proportional to 112,140.70, 168,211.05 and 99,674.80 is: 149,512.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,140.70 : 168,211.05 = 99,674.80 : x
  2. Step 2: Convert to fraction form
    112,140.70/168,211.05 = 99,674.80/x
  3. Step 3: Cross multiply
    112,140.70x = 168,211.05 × 99,674.80
  4. Step 4: Simplify right side
    112,140.70x = 16,766,402,766.54
  5. Step 5: Solve for x
    x = 16,766,402,766.54/112,140.70
  6. Step 6: Final answer
    x = 149,512.20

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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.