Home / 128,880.30-193,223.18-84,518.22

Finding the Fourth Proportional to 128,880.30, 193,223.18 and 84,518.22

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Solution

The fourth proportional to 128,880.30, 193,223.18 and 84,518.22 is: 126,713.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,880.30 : 193,223.18 = 84,518.22 : x
  2. Step 2: Convert to fraction form
    128,880.30/193,223.18 = 84,518.22/x
  3. Step 3: Cross multiply
    128,880.30x = 193,223.18 × 84,518.22
  4. Step 4: Simplify right side
    128,880.30x = 16,330,879,236.34
  5. Step 5: Solve for x
    x = 16,330,879,236.34/128,880.30
  6. Step 6: Final answer
    x = 126,713.54

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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.