Home / 210,313.18-290,137.44-129,744.10

Finding the Fourth Proportional to 210,313.18, 290,137.44 and 129,744.10

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Solution

The fourth proportional to 210,313.18, 290,137.44 and 129,744.10 is: 178,988.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,313.18 : 290,137.44 = 129,744.10 : x
  2. Step 2: Convert to fraction form
    210,313.18/290,137.44 = 129,744.10/x
  3. Step 3: Cross multiply
    210,313.18x = 290,137.44 × 129,744.10
  4. Step 4: Simplify right side
    210,313.18x = 37,643,621,029.10
  5. Step 5: Solve for x
    x = 37,643,621,029.10/210,313.18
  6. Step 6: Final answer
    x = 178,988.41

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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.