Home / 153,438.21-230,152.05-74,531.25

Finding the Fourth Proportional to 153,438.21, 230,152.05 and 74,531.25

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Solution

The fourth proportional to 153,438.21, 230,152.05 and 74,531.25 is: 111,794.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,438.21 : 230,152.05 = 74,531.25 : x
  2. Step 2: Convert to fraction form
    153,438.21/230,152.05 = 74,531.25/x
  3. Step 3: Cross multiply
    153,438.21x = 230,152.05 × 74,531.25
  4. Step 4: Simplify right side
    153,438.21x = 17,153,519,976.56
  5. Step 5: Solve for x
    x = 17,153,519,976.56/153,438.21
  6. Step 6: Final answer
    x = 111,794.32

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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.