Home / 210,214.82-290,093.73-128,515.79

Finding the Fourth Proportional to 210,214.82, 290,093.73 and 128,515.79

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Solution

The fourth proportional to 210,214.82, 290,093.73 and 128,515.79 is: 177,350.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,214.82 : 290,093.73 = 128,515.79 : x
  2. Step 2: Convert to fraction form
    210,214.82/290,093.73 = 128,515.79/x
  3. Step 3: Cross multiply
    210,214.82x = 290,093.73 × 128,515.79
  4. Step 4: Simplify right side
    210,214.82x = 37,281,624,885.00
  5. Step 5: Solve for x
    x = 37,281,624,885.00/210,214.82
  6. Step 6: Final answer
    x = 177,350.13

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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.