Home / 187,782.37-258,998.31-130,421.76

Finding the Fourth Proportional to 187,782.37, 258,998.31 and 130,421.76

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Solution

The fourth proportional to 187,782.37, 258,998.31 and 130,421.76 is: 179,883.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,782.37 : 258,998.31 = 130,421.76 : x
  2. Step 2: Convert to fraction form
    187,782.37/258,998.31 = 130,421.76/x
  3. Step 3: Cross multiply
    187,782.37x = 258,998.31 × 130,421.76
  4. Step 4: Simplify right side
    187,782.37x = 33,779,015,912.85
  5. Step 5: Solve for x
    x = 33,779,015,912.85/187,782.37
  6. Step 6: Final answer
    x = 179,883.85

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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.