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Finding the Fourth Proportional to 187,889.96, 259,287.87 and 103,012.46

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Solution

The fourth proportional to 187,889.96, 259,287.87 and 103,012.46 is: 142,157.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,889.96 : 259,287.87 = 103,012.46 : x
  2. Step 2: Convert to fraction form
    187,889.96/259,287.87 = 103,012.46/x
  3. Step 3: Cross multiply
    187,889.96x = 259,287.87 × 103,012.46
  4. Step 4: Simplify right side
    187,889.96x = 26,709,881,336.86
  5. Step 5: Solve for x
    x = 26,709,881,336.86/187,889.96
  6. Step 6: Final answer
    x = 142,157.04

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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.