Home / 145,190.64-217,665-126,424.56

Finding the Fourth Proportional to 145,190.64, 217,665 and 126,424.56

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Solution

The fourth proportional to 145,190.64, 217,665 and 126,424.56 is: 189,531.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,190.64 : 217,665 = 126,424.56 : x
  2. Step 2: Convert to fraction form
    145,190.64/217,665 = 126,424.56/x
  3. Step 3: Cross multiply
    145,190.64x = 217,665 × 126,424.56
  4. Step 4: Simplify right side
    145,190.64x = 27,518,201,852.40
  5. Step 5: Solve for x
    x = 27,518,201,852.40/145,190.64
  6. Step 6: Final answer
    x = 189,531.51

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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.