Home / 208,087,452.63-312,174,977.39-78,692,168.79

Finding the Fourth Proportional to 208,087,452.63, 312,174,977.39 and 78,692,168.79

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Solution

The fourth proportional to 208,087,452.63, 312,174,977.39 and 78,692,168.79 is: 118,054,816.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,087,452.63 : 312,174,977.39 = 78,692,168.79 : x
  2. Step 2: Convert to fraction form
    208,087,452.63/312,174,977.39 = 78,692,168.79/x
  3. Step 3: Cross multiply
    208,087,452.63x = 312,174,977.39 × 78,692,168.79
  4. Step 4: Simplify right side
    208,087,452.63x = 24,565,726,012,394,856
  5. Step 5: Solve for x
    x = 24,565,726,012,394,856/208,087,452.63
  6. Step 6: Final answer
    x = 118,054,816.39

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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.