Home / 103,678.12-143,119.14-70,163.56

Finding the Fourth Proportional to 103,678.12, 143,119.14 and 70,163.56

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Solution

The fourth proportional to 103,678.12, 143,119.14 and 70,163.56 is: 96,855.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,678.12 : 143,119.14 = 70,163.56 : x
  2. Step 2: Convert to fraction form
    103,678.12/143,119.14 = 70,163.56/x
  3. Step 3: Cross multiply
    103,678.12x = 143,119.14 × 70,163.56
  4. Step 4: Simplify right side
    103,678.12x = 10,041,748,366.54
  5. Step 5: Solve for x
    x = 10,041,748,366.54/103,678.12
  6. Step 6: Final answer
    x = 96,855.04

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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.