Home / 208,189.76-287,280.56-120,961.26

Finding the Fourth Proportional to 208,189.76, 287,280.56 and 120,961.26

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Solution

The fourth proportional to 208,189.76, 287,280.56 and 120,961.26 is: 166,914.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,189.76 : 287,280.56 = 120,961.26 : x
  2. Step 2: Convert to fraction form
    208,189.76/287,280.56 = 120,961.26/x
  3. Step 3: Cross multiply
    208,189.76x = 287,280.56 × 120,961.26
  4. Step 4: Simplify right side
    208,189.76x = 34,749,819,047.40
  5. Step 5: Solve for x
    x = 34,749,819,047.40/208,189.76
  6. Step 6: Final answer
    x = 166,914.16

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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.