Home / 189,407.41-261,480.50-138,362.83

Finding the Fourth Proportional to 189,407.41, 261,480.50 and 138,362.83

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Solution

The fourth proportional to 189,407.41, 261,480.50 and 138,362.83 is: 191,012.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,407.41 : 261,480.50 = 138,362.83 : x
  2. Step 2: Convert to fraction form
    189,407.41/261,480.50 = 138,362.83/x
  3. Step 3: Cross multiply
    189,407.41x = 261,480.50 × 138,362.83
  4. Step 4: Simplify right side
    189,407.41x = 36,179,181,969.82
  5. Step 5: Solve for x
    x = 36,179,181,969.82/189,407.41
  6. Step 6: Final answer
    x = 191,012.50

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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.