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Finding the Fourth Proportional to 187,893.60, 259,291.80 and 103,009.20

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Solution

The fourth proportional to 187,893.60, 259,291.80 and 103,009.20 is: 142,151.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,893.60 : 259,291.80 = 103,009.20 : x
  2. Step 2: Convert to fraction form
    187,893.60/259,291.80 = 103,009.20/x
  3. Step 3: Cross multiply
    187,893.60x = 259,291.80 × 103,009.20
  4. Step 4: Simplify right side
    187,893.60x = 26,709,440,884.56
  5. Step 5: Solve for x
    x = 26,709,440,884.56/187,893.60
  6. Step 6: Final answer
    x = 142,151.95

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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.