Home / 210,606.12-290,635.74-115,112.76

Finding the Fourth Proportional to 210,606.12, 290,635.74 and 115,112.76

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Solution

The fourth proportional to 210,606.12, 290,635.74 and 115,112.76 is: 158,855.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,606.12 : 290,635.74 = 115,112.76 : x
  2. Step 2: Convert to fraction form
    210,606.12/290,635.74 = 115,112.76/x
  3. Step 3: Cross multiply
    210,606.12x = 290,635.74 × 115,112.76
  4. Step 4: Simplify right side
    210,606.12x = 33,455,882,186.04
  5. Step 5: Solve for x
    x = 33,455,882,186.04/210,606.12
  6. Step 6: Final answer
    x = 158,855.22

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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.