Home / 189,555.96-261,587.16-108,999.30

Finding the Fourth Proportional to 189,555.96, 261,587.16 and 108,999.30

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Solution

The fourth proportional to 189,555.96, 261,587.16 and 108,999.30 is: 150,419.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,555.96 : 261,587.16 = 108,999.30 : x
  2. Step 2: Convert to fraction form
    189,555.96/261,587.16 = 108,999.30/x
  3. Step 3: Cross multiply
    189,555.96x = 261,587.16 × 108,999.30
  4. Step 4: Simplify right side
    189,555.96x = 28,512,817,328.99
  5. Step 5: Solve for x
    x = 28,512,817,328.99/189,555.96
  6. Step 6: Final answer
    x = 150,419.00

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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.