Home / 187,054.80-258,135-102,171.84

Finding the Fourth Proportional to 187,054.80, 258,135 and 102,171.84

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Solution

The fourth proportional to 187,054.80, 258,135 and 102,171.84 is: 140,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,054.80 : 258,135 = 102,171.84 : x
  2. Step 2: Convert to fraction form
    187,054.80/258,135 = 102,171.84/x
  3. Step 3: Cross multiply
    187,054.80x = 258,135 × 102,171.84
  4. Step 4: Simplify right side
    187,054.80x = 26,374,127,918.40
  5. Step 5: Solve for x
    x = 26,374,127,918.40/187,054.80
  6. Step 6: Final answer
    x = 140,996.80

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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.