Home / 128,923.40-193,385.10-97,819.40

Finding the Fourth Proportional to 128,923.40, 193,385.10 and 97,819.40

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Solution

The fourth proportional to 128,923.40, 193,385.10 and 97,819.40 is: 146,729.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,923.40 : 193,385.10 = 97,819.40 : x
  2. Step 2: Convert to fraction form
    128,923.40/193,385.10 = 97,819.40/x
  3. Step 3: Cross multiply
    128,923.40x = 193,385.10 × 97,819.40
  4. Step 4: Simplify right side
    128,923.40x = 18,916,814,450.94
  5. Step 5: Solve for x
    x = 18,916,814,450.94/128,923.40
  6. Step 6: Final answer
    x = 146,729.10

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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.