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Finding the Fourth Proportional to 210,693.96, 290,855.21 and 124,625.79

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Solution

The fourth proportional to 210,693.96, 290,855.21 and 124,625.79 is: 172,041.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,693.96 : 290,855.21 = 124,625.79 : x
  2. Step 2: Convert to fraction form
    210,693.96/290,855.21 = 124,625.79/x
  3. Step 3: Cross multiply
    210,693.96x = 290,855.21 × 124,625.79
  4. Step 4: Simplify right side
    210,693.96x = 36,248,059,698.74
  5. Step 5: Solve for x
    x = 36,248,059,698.74/210,693.96
  6. Step 6: Final answer
    x = 172,041.29

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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.