Home / 136,838,406-188,685,680.40-87,200,148

Finding the Fourth Proportional to 136,838,406, 188,685,680.40 and 87,200,148

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Solution

The fourth proportional to 136,838,406, 188,685,680.40 and 87,200,148 is: 120,239,775.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,838,406 : 188,685,680.40 = 87,200,148 : x
  2. Step 2: Convert to fraction form
    136,838,406/188,685,680.40 = 87,200,148/x
  3. Step 3: Cross multiply
    136,838,406x = 188,685,680.40 × 87,200,148
  4. Step 4: Simplify right side
    136,838,406x = 16,453,419,256,360,700
  5. Step 5: Solve for x
    x = 16,453,419,256,360,700/136,838,406
  6. Step 6: Final answer
    x = 120,239,775.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.