Home / 259,152.98-388,590.96-81,612.32

Finding the Fourth Proportional to 259,152.98, 388,590.96 and 81,612.32

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Solution

The fourth proportional to 259,152.98, 388,590.96 and 81,612.32 is: 122,374.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,152.98 : 388,590.96 = 81,612.32 : x
  2. Step 2: Convert to fraction form
    259,152.98/388,590.96 = 81,612.32/x
  3. Step 3: Cross multiply
    259,152.98x = 388,590.96 × 81,612.32
  4. Step 4: Simplify right side
    259,152.98x = 31,713,809,776.63
  5. Step 5: Solve for x
    x = 31,713,809,776.63/259,152.98
  6. Step 6: Final answer
    x = 122,374.86

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1.5x scale

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.