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Finding the Fourth Proportional to 222,987.80, 307,725.42 and 121,014.14

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Solution

The fourth proportional to 222,987.80, 307,725.42 and 121,014.14 is: 167,000.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,987.80 : 307,725.42 = 121,014.14 : x
  2. Step 2: Convert to fraction form
    222,987.80/307,725.42 = 121,014.14/x
  3. Step 3: Cross multiply
    222,987.80x = 307,725.42 × 121,014.14
  4. Step 4: Simplify right side
    222,987.80x = 37,239,128,159.40
  5. Step 5: Solve for x
    x = 37,239,128,159.40/222,987.80
  6. Step 6: Final answer
    x = 167,000.74

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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.