Home / 208,126.47-287,222.75-117,485.67

Finding the Fourth Proportional to 208,126.47, 287,222.75 and 117,485.67

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Solution

The fourth proportional to 208,126.47, 287,222.75 and 117,485.67 is: 162,134.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,126.47 : 287,222.75 = 117,485.67 : x
  2. Step 2: Convert to fraction form
    208,126.47/287,222.75 = 117,485.67/x
  3. Step 3: Cross multiply
    208,126.47x = 287,222.75 × 117,485.67
  4. Step 4: Simplify right side
    208,126.47x = 33,744,557,222.99
  5. Step 5: Solve for x
    x = 33,744,557,222.99/208,126.47
  6. Step 6: Final answer
    x = 162,134.87

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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.