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Finding the Fourth Proportional to 223,725.76, 308,737.56 and 121,747.76

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Solution

The fourth proportional to 223,725.76, 308,737.56 and 121,747.76 is: 168,009.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,725.76 : 308,737.56 = 121,747.76 : x
  2. Step 2: Convert to fraction form
    223,725.76/308,737.56 = 121,747.76/x
  3. Step 3: Cross multiply
    223,725.76x = 308,737.56 × 121,747.76
  4. Step 4: Simplify right side
    223,725.76x = 37,588,106,357.87
  5. Step 5: Solve for x
    x = 37,588,106,357.87/223,725.76
  6. Step 6: Final answer
    x = 168,009.74

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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.