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Finding the Fourth Proportional to 210,675.94, 316,055.60 and 68,512.05

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Solution

The fourth proportional to 210,675.94, 316,055.60 and 68,512.05 is: 102,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,675.94 : 316,055.60 = 68,512.05 : x
  2. Step 2: Convert to fraction form
    210,675.94/316,055.60 = 68,512.05/x
  3. Step 3: Cross multiply
    210,675.94x = 316,055.60 × 68,512.05
  4. Step 4: Simplify right side
    210,675.94x = 21,653,616,984.34
  5. Step 5: Solve for x
    x = 21,653,616,984.34/210,675.94
  6. Step 6: Final answer
    x = 102,781.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.