Home / 154,416.30-231,664.40-90,428.48

Finding the Fourth Proportional to 154,416.30, 231,664.40 and 90,428.48

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Solution

The fourth proportional to 154,416.30, 231,664.40 and 90,428.48 is: 135,666.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,416.30 : 231,664.40 = 90,428.48 : x
  2. Step 2: Convert to fraction form
    154,416.30/231,664.40 = 90,428.48/x
  3. Step 3: Cross multiply
    154,416.30x = 231,664.40 × 90,428.48
  4. Step 4: Simplify right side
    154,416.30x = 20,949,059,562.11
  5. Step 5: Solve for x
    x = 20,949,059,562.11/154,416.30
  6. Step 6: Final answer
    x = 135,666.12

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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.