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Finding the Fourth Proportional to 208,069.84, 287,143.68 and 117,447.76

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Solution

The fourth proportional to 208,069.84, 287,143.68 and 117,447.76 is: 162,082.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,069.84 : 287,143.68 = 117,447.76 : x
  2. Step 2: Convert to fraction form
    208,069.84/287,143.68 = 117,447.76/x
  3. Step 3: Cross multiply
    208,069.84x = 287,143.68 × 117,447.76
  4. Step 4: Simplify right side
    208,069.84x = 33,724,382,014.16
  5. Step 5: Solve for x
    x = 33,724,382,014.16/208,069.84
  6. Step 6: Final answer
    x = 162,082.03

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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.