Home / 109,647.69-151,315.09-64,326.45

Finding the Fourth Proportional to 109,647.69, 151,315.09 and 64,326.45

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Solution

The fourth proportional to 109,647.69, 151,315.09 and 64,326.45 is: 88,771.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,647.69 : 151,315.09 = 64,326.45 : x
  2. Step 2: Convert to fraction form
    109,647.69/151,315.09 = 64,326.45/x
  3. Step 3: Cross multiply
    109,647.69x = 151,315.09 × 64,326.45
  4. Step 4: Simplify right side
    109,647.69x = 9,733,562,571.13
  5. Step 5: Solve for x
    x = 9,733,562,571.13/109,647.69
  6. Step 6: Final answer
    x = 88,771.25

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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.