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Finding the Fourth Proportional to 187,893, 259,428.42 and 120,941.64

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Solution

The fourth proportional to 187,893, 259,428.42 and 120,941.64 is: 166,987.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,893 : 259,428.42 = 120,941.64 : x
  2. Step 2: Convert to fraction form
    187,893/259,428.42 = 120,941.64/x
  3. Step 3: Cross multiply
    187,893x = 259,428.42 × 120,941.64
  4. Step 4: Simplify right side
    187,893x = 31,375,698,577.41
  5. Step 5: Solve for x
    x = 31,375,698,577.41/187,893
  6. Step 6: Final answer
    x = 166,987.05

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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.