Home / 123,811.36-170,870.25-70,105.84

Finding the Fourth Proportional to 123,811.36, 170,870.25 and 70,105.84

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Solution

The fourth proportional to 123,811.36, 170,870.25 and 70,105.84 is: 96,752.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,811.36 : 170,870.25 = 70,105.84 : x
  2. Step 2: Convert to fraction form
    123,811.36/170,870.25 = 70,105.84/x
  3. Step 3: Cross multiply
    123,811.36x = 170,870.25 × 70,105.84
  4. Step 4: Simplify right side
    123,811.36x = 11,979,002,407.26
  5. Step 5: Solve for x
    x = 11,979,002,407.26/123,811.36
  6. Step 6: Final answer
    x = 96,752.05

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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.