Home / 187,071.12-258,157.13-102,187.58

Finding the Fourth Proportional to 187,071.12, 258,157.13 and 102,187.58

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Solution

The fourth proportional to 187,071.12, 258,157.13 and 102,187.58 is: 141,018.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,071.12 : 258,157.13 = 102,187.58 : x
  2. Step 2: Convert to fraction form
    187,071.12/258,157.13 = 102,187.58/x
  3. Step 3: Cross multiply
    187,071.12x = 258,157.13 × 102,187.58
  4. Step 4: Simplify right side
    187,071.12x = 26,380,450,572.72
  5. Step 5: Solve for x
    x = 26,380,450,572.72/187,071.12
  6. Step 6: Final answer
    x = 141,018.30

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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.