Home / 210,383.45-315,577.96-70,142.12

Finding the Fourth Proportional to 210,383.45, 315,577.96 and 70,142.12

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Solution

The fourth proportional to 210,383.45, 315,577.96 and 70,142.12 is: 105,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,383.45 : 315,577.96 = 70,142.12 : x
  2. Step 2: Convert to fraction form
    210,383.45/315,577.96 = 70,142.12/x
  3. Step 3: Cross multiply
    210,383.45x = 315,577.96 × 70,142.12
  4. Step 4: Simplify right side
    210,383.45x = 22,135,305,561.79
  5. Step 5: Solve for x
    x = 22,135,305,561.79/210,383.45
  6. Step 6: Final answer
    x = 105,214.10

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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.