Home / 139,454,761.80-209,190,015.90-42,413,635.20

Finding the Fourth Proportional to 139,454,761.80, 209,190,015.90 and 42,413,635.20

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Solution

The fourth proportional to 139,454,761.80, 209,190,015.90 and 42,413,635.20 is: 63,622,847.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,454,761.80 : 209,190,015.90 = 42,413,635.20 : x
  2. Step 2: Convert to fraction form
    139,454,761.80/209,190,015.90 = 42,413,635.20/x
  3. Step 3: Cross multiply
    139,454,761.80x = 209,190,015.90 × 42,413,635.20
  4. Step 4: Simplify right side
    139,454,761.80x = 8,872,509,021,864,801
  5. Step 5: Solve for x
    x = 8,872,509,021,864,801/139,454,761.80
  6. Step 6: Final answer
    x = 63,622,847.35

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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.