Home / 208,015.01-286,969.54-121,930.36

Finding the Fourth Proportional to 208,015.01, 286,969.54 and 121,930.36

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Solution

The fourth proportional to 208,015.01, 286,969.54 and 121,930.36 is: 168,210.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015.01 : 286,969.54 = 121,930.36 : x
  2. Step 2: Convert to fraction form
    208,015.01/286,969.54 = 121,930.36/x
  3. Step 3: Cross multiply
    208,015.01x = 286,969.54 × 121,930.36
  4. Step 4: Simplify right side
    208,015.01x = 34,990,299,321.23
  5. Step 5: Solve for x
    x = 34,990,299,321.23/208,015.01
  6. Step 6: Final answer
    x = 168,210.45

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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.