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Finding the Fourth Proportional to 111,904.96, 154,424.32 and 64,125.12

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Solution

The fourth proportional to 111,904.96, 154,424.32 and 64,125.12 is: 88,490.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,904.96 : 154,424.32 = 64,125.12 : x
  2. Step 2: Convert to fraction form
    111,904.96/154,424.32 = 64,125.12/x
  3. Step 3: Cross multiply
    111,904.96x = 154,424.32 × 64,125.12
  4. Step 4: Simplify right side
    111,904.96x = 9,902,478,050.92
  5. Step 5: Solve for x
    x = 9,902,478,050.92/111,904.96
  6. Step 6: Final answer
    x = 88,490.07

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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.