Home / 120,563,565.78-180,617,160.60-71,231,891.52

Finding the Fourth Proportional to 120,563,565.78, 180,617,160.60 and 71,231,891.52

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Solution

The fourth proportional to 120,563,565.78, 180,617,160.60 and 71,231,891.52 is: 106,713,018.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,563,565.78 : 180,617,160.60 = 71,231,891.52 : x
  2. Step 2: Convert to fraction form
    120,563,565.78/180,617,160.60 = 71,231,891.52/x
  3. Step 3: Cross multiply
    120,563,565.78x = 180,617,160.60 × 71,231,891.52
  4. Step 4: Simplify right side
    120,563,565.78x = 12,865,701,990,509,616
  5. Step 5: Solve for x
    x = 12,865,701,990,509,616/120,563,565.78
  6. Step 6: Final answer
    x = 106,713,018.21

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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.