Home / 223,947.32-309,041.10-121,970.54

Finding the Fourth Proportional to 223,947.32, 309,041.10 and 121,970.54

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Solution

The fourth proportional to 223,947.32, 309,041.10 and 121,970.54 is: 168,315.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,947.32 : 309,041.10 = 121,970.54 : x
  2. Step 2: Convert to fraction form
    223,947.32/309,041.10 = 121,970.54/x
  3. Step 3: Cross multiply
    223,947.32x = 309,041.10 × 121,970.54
  4. Step 4: Simplify right side
    223,947.32x = 37,693,910,621.80
  5. Step 5: Solve for x
    x = 37,693,910,621.80/223,947.32
  6. Step 6: Final answer
    x = 168,315.97

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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.