Home / 112,390.45-168,093.60-85,818.40

Finding the Fourth Proportional to 112,390.45, 168,093.60 and 85,818.40

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Solution

The fourth proportional to 112,390.45, 168,093.60 and 85,818.40 is: 128,351.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,390.45 : 168,093.60 = 85,818.40 : x
  2. Step 2: Convert to fraction form
    112,390.45/168,093.60 = 85,818.40/x
  3. Step 3: Cross multiply
    112,390.45x = 168,093.60 × 85,818.40
  4. Step 4: Simplify right side
    112,390.45x = 14,425,523,802.24
  5. Step 5: Solve for x
    x = 14,425,523,802.24/112,390.45
  6. Step 6: Final answer
    x = 128,351.86

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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.