Home / 145,009-200,112.96-84,621.34

Finding the Fourth Proportional to 145,009, 200,112.96 and 84,621.34

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Solution

The fourth proportional to 145,009, 200,112.96 and 84,621.34 is: 116,777.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,009 : 200,112.96 = 84,621.34 : x
  2. Step 2: Convert to fraction form
    145,009/200,112.96 = 84,621.34/x
  3. Step 3: Cross multiply
    145,009x = 200,112.96 × 84,621.34
  4. Step 4: Simplify right side
    145,009x = 16,933,826,826.57
  5. Step 5: Solve for x
    x = 16,933,826,826.57/145,009
  6. Step 6: Final answer
    x = 116,777.76

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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.