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Finding the Fourth Proportional to 151,533.54, 209,205.88 and 134,720

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Solution

The fourth proportional to 151,533.54, 209,205.88 and 134,720 is: 185,993.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,533.54 : 209,205.88 = 134,720 : x
  2. Step 2: Convert to fraction form
    151,533.54/209,205.88 = 134,720/x
  3. Step 3: Cross multiply
    151,533.54x = 209,205.88 × 134,720
  4. Step 4: Simplify right side
    151,533.54x = 28,184,216,153.60
  5. Step 5: Solve for x
    x = 28,184,216,153.60/151,533.54
  6. Step 6: Final answer
    x = 185,993.25

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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.