Home / 208,015.51-286,970.23-121,930.86

Finding the Fourth Proportional to 208,015.51, 286,970.23 and 121,930.86

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Solution

The fourth proportional to 208,015.51, 286,970.23 and 121,930.86 is: 168,211.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015.51 : 286,970.23 = 121,930.86 : x
  2. Step 2: Convert to fraction form
    208,015.51/286,970.23 = 121,930.86/x
  3. Step 3: Cross multiply
    208,015.51x = 286,970.23 × 121,930.86
  4. Step 4: Simplify right side
    208,015.51x = 34,990,526,938.30
  5. Step 5: Solve for x
    x = 34,990,526,938.30/208,015.51
  6. Step 6: Final answer
    x = 168,211.14

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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.