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Finding the Fourth Proportional to 222,987.50, 307,725.00 and 121,013.84

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Solution

The fourth proportional to 222,987.50, 307,725.00 and 121,013.84 is: 167,000.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,987.50 : 307,725.00 = 121,013.84 : x
  2. Step 2: Convert to fraction form
    222,987.50/307,725.00 = 121,013.84/x
  3. Step 3: Cross multiply
    222,987.50x = 307,725.00 × 121,013.84
  4. Step 4: Simplify right side
    222,987.50x = 37,238,983,179.26
  5. Step 5: Solve for x
    x = 37,238,983,179.26/222,987.50
  6. Step 6: Final answer
    x = 167,000.32

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1.5x scale

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.