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Finding the Fourth Proportional to 145,863.82, 201,320.94 and 92,121.94

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Solution

The fourth proportional to 145,863.82, 201,320.94 and 92,121.94 is: 127,146.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,863.82 : 201,320.94 = 92,121.94 : x
  2. Step 2: Convert to fraction form
    145,863.82/201,320.94 = 92,121.94/x
  3. Step 3: Cross multiply
    145,863.82x = 201,320.94 × 92,121.94
  4. Step 4: Simplify right side
    145,863.82x = 18,546,075,555.42
  5. Step 5: Solve for x
    x = 18,546,075,555.42/145,863.82
  6. Step 6: Final answer
    x = 127,146.51

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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.