Home / 103,621.12-143,040.48-70,106.56

Finding the Fourth Proportional to 103,621.12, 143,040.48 and 70,106.56

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Solution

The fourth proportional to 103,621.12, 143,040.48 and 70,106.56 is: 96,776.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.12 : 143,040.48 = 70,106.56 : x
  2. Step 2: Convert to fraction form
    103,621.12/143,040.48 = 70,106.56/x
  3. Step 3: Cross multiply
    103,621.12x = 143,040.48 × 70,106.56
  4. Step 4: Simplify right side
    103,621.12x = 10,028,075,993.55
  5. Step 5: Solve for x
    x = 10,028,075,993.55/103,621.12
  6. Step 6: Final answer
    x = 96,776.37

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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.