Home / 187,890.48-259,288.80-103,005.72

Finding the Fourth Proportional to 187,890.48, 259,288.80 and 103,005.72

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Solution

The fourth proportional to 187,890.48, 259,288.80 and 103,005.72 is: 142,147.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,890.48 : 259,288.80 = 103,005.72 : x
  2. Step 2: Convert to fraction form
    187,890.48/259,288.80 = 103,005.72/x
  3. Step 3: Cross multiply
    187,890.48x = 259,288.80 × 103,005.72
  4. Step 4: Simplify right side
    187,890.48x = 26,708,229,531.94
  5. Step 5: Solve for x
    x = 26,708,229,531.94/187,890.48
  6. Step 6: Final answer
    x = 142,147.86

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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.