Home / 128,011,191.40-191,733,351.90-105,336,375.40

Finding the Fourth Proportional to 128,011,191.40, 191,733,351.90 and 105,336,375.40

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Solution

The fourth proportional to 128,011,191.40, 191,733,351.90 and 105,336,375.40 is: 157,771,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,011,191.40 : 191,733,351.90 = 105,336,375.40 : x
  2. Step 2: Convert to fraction form
    128,011,191.40/191,733,351.90 = 105,336,375.40/x
  3. Step 3: Cross multiply
    128,011,191.40x = 191,733,351.90 × 105,336,375.40
  4. Step 4: Simplify right side
    128,011,191.40x = 20,196,496,332,438,704
  5. Step 5: Solve for x
    x = 20,196,496,332,438,704/128,011,191.40
  6. Step 6: Final answer
    x = 157,771,333.21

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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.