Home / 187,145.34-258,187.33-115,400.80

Finding the Fourth Proportional to 187,145.34, 258,187.33 and 115,400.80

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Solution

The fourth proportional to 187,145.34, 258,187.33 and 115,400.80 is: 159,207.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,145.34 : 258,187.33 = 115,400.80 : x
  2. Step 2: Convert to fraction form
    187,145.34/258,187.33 = 115,400.80/x
  3. Step 3: Cross multiply
    187,145.34x = 258,187.33 × 115,400.80
  4. Step 4: Simplify right side
    187,145.34x = 29,795,024,431.86
  5. Step 5: Solve for x
    x = 29,795,024,431.86/187,145.34
  6. Step 6: Final answer
    x = 159,207.94

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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.