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Finding the Fourth Proportional to 149,143.68, 205,818.33 and 82,075.68

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Solution

The fourth proportional to 149,143.68, 205,818.33 and 82,075.68 is: 113,264.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,143.68 : 205,818.33 = 82,075.68 : x
  2. Step 2: Convert to fraction form
    149,143.68/205,818.33 = 82,075.68/x
  3. Step 3: Cross multiply
    149,143.68x = 205,818.33 × 82,075.68
  4. Step 4: Simplify right side
    149,143.68x = 16,892,679,391.21
  5. Step 5: Solve for x
    x = 16,892,679,391.21/149,143.68
  6. Step 6: Final answer
    x = 113,264.47

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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.