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Finding the Fourth Proportional to 154,234.88, 212,821.50 and 90,593.18

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Solution

The fourth proportional to 154,234.88, 212,821.50 and 90,593.18 is: 125,005.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,234.88 : 212,821.50 = 90,593.18 : x
  2. Step 2: Convert to fraction form
    154,234.88/212,821.50 = 90,593.18/x
  3. Step 3: Cross multiply
    154,234.88x = 212,821.50 × 90,593.18
  4. Step 4: Simplify right side
    154,234.88x = 19,280,176,457.37
  5. Step 5: Solve for x
    x = 19,280,176,457.37/154,234.88
  6. Step 6: Final answer
    x = 125,005.29

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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.