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Finding the Fourth Proportional to 154,625.76, 213,363.63 and 90,940.32

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Solution

The fourth proportional to 154,625.76, 213,363.63 and 90,940.32 is: 125,485.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,625.76 : 213,363.63 = 90,940.32 : x
  2. Step 2: Convert to fraction form
    154,625.76/213,363.63 = 90,940.32/x
  3. Step 3: Cross multiply
    154,625.76x = 213,363.63 × 90,940.32
  4. Step 4: Simplify right side
    154,625.76x = 19,403,356,788.56
  5. Step 5: Solve for x
    x = 19,403,356,788.56/154,625.76
  6. Step 6: Final answer
    x = 125,485.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.