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Finding the Fourth Proportional to 187,762.49, 259,112.40 and 102,879.56

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Solution

The fourth proportional to 187,762.49, 259,112.40 and 102,879.56 is: 141,973.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,762.49 : 259,112.40 = 102,879.56 : x
  2. Step 2: Convert to fraction form
    187,762.49/259,112.40 = 102,879.56/x
  3. Step 3: Cross multiply
    187,762.49x = 259,112.40 × 102,879.56
  4. Step 4: Simplify right side
    187,762.49x = 26,657,368,021.18
  5. Step 5: Solve for x
    x = 26,657,368,021.18/187,762.49
  6. Step 6: Final answer
    x = 141,973.87

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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.