Home / 109,458.05-151,054.00-66,438.54

Finding the Fourth Proportional to 109,458.05, 151,054.00 and 66,438.54

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Solution

The fourth proportional to 109,458.05, 151,054.00 and 66,438.54 is: 91,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,458.05 : 151,054.00 = 66,438.54 : x
  2. Step 2: Convert to fraction form
    109,458.05/151,054.00 = 66,438.54/x
  3. Step 3: Cross multiply
    109,458.05x = 151,054.00 × 66,438.54
  4. Step 4: Simplify right side
    109,458.05x = 10,035,807,055.06
  5. Step 5: Solve for x
    x = 10,035,807,055.06/109,458.05
  6. Step 6: Final answer
    x = 91,686.34

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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.