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Finding the Fourth Proportional to 154,647.94, 213,410.65 and 90,113.17

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Solution

The fourth proportional to 154,647.94, 213,410.65 and 90,113.17 is: 124,354.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,647.94 : 213,410.65 = 90,113.17 : x
  2. Step 2: Convert to fraction form
    154,647.94/213,410.65 = 90,113.17/x
  3. Step 3: Cross multiply
    154,647.94x = 213,410.65 × 90,113.17
  4. Step 4: Simplify right side
    154,647.94x = 19,231,110,183.26
  5. Step 5: Solve for x
    x = 19,231,110,183.26/154,647.94
  6. Step 6: Final answer
    x = 124,354.13

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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.