Home / 105,126.46-145,075.26-57,380.20

Finding the Fourth Proportional to 105,126.46, 145,075.26 and 57,380.20

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Solution

The fourth proportional to 105,126.46, 145,075.26 and 57,380.20 is: 79,185.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,126.46 : 145,075.26 = 57,380.20 : x
  2. Step 2: Convert to fraction form
    105,126.46/145,075.26 = 57,380.20/x
  3. Step 3: Cross multiply
    105,126.46x = 145,075.26 × 57,380.20
  4. Step 4: Simplify right side
    105,126.46x = 8,324,447,433.85
  5. Step 5: Solve for x
    x = 8,324,447,433.85/105,126.46
  6. Step 6: Final answer
    x = 79,185.08

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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.