Home / 139,828,179.78-209,742,933.06-42,783,732.54

Finding the Fourth Proportional to 139,828,179.78, 209,742,933.06 and 42,783,732.54

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Solution

The fourth proportional to 139,828,179.78, 209,742,933.06 and 42,783,732.54 is: 64,175,801.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,828,179.78 : 209,742,933.06 = 42,783,732.54 : x
  2. Step 2: Convert to fraction form
    139,828,179.78/209,742,933.06 = 42,783,732.54/x
  3. Step 3: Cross multiply
    139,828,179.78x = 209,742,933.06 × 42,783,732.54
  4. Step 4: Simplify right side
    139,828,179.78x = 8,973,585,550,194,164
  5. Step 5: Solve for x
    x = 8,973,585,550,194,164/139,828,179.78
  6. Step 6: Final answer
    x = 64,175,801.79

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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.