Home / 210,735.22-290,837.15-129,117.64

Finding the Fourth Proportional to 210,735.22, 290,837.15 and 129,117.64

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Solution

The fourth proportional to 210,735.22, 290,837.15 and 129,117.64 is: 178,196.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,735.22 : 290,837.15 = 129,117.64 : x
  2. Step 2: Convert to fraction form
    210,735.22/290,837.15 = 129,117.64/x
  3. Step 3: Cross multiply
    210,735.22x = 290,837.15 × 129,117.64
  4. Step 4: Simplify right side
    210,735.22x = 37,552,205,786.74
  5. Step 5: Solve for x
    x = 37,552,205,786.74/210,735.22
  6. Step 6: Final answer
    x = 178,196.15

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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.