Home / 123,291.36-170,142.66-69,578.64

Finding the Fourth Proportional to 123,291.36, 170,142.66 and 69,578.64

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Solution

The fourth proportional to 123,291.36, 170,142.66 and 69,578.64 is: 96,018.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,291.36 : 170,142.66 = 69,578.64 : x
  2. Step 2: Convert to fraction form
    123,291.36/170,142.66 = 69,578.64/x
  3. Step 3: Cross multiply
    123,291.36x = 170,142.66 × 69,578.64
  4. Step 4: Simplify right side
    123,291.36x = 11,838,294,888.78
  5. Step 5: Solve for x
    x = 11,838,294,888.78/123,291.36
  6. Step 6: Final answer
    x = 96,018.85

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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.