Home / 145,136.76-200,295.37-80,606.25

Finding the Fourth Proportional to 145,136.76, 200,295.37 and 80,606.25

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Solution

The fourth proportional to 145,136.76, 200,295.37 and 80,606.25 is: 111,240.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,136.76 : 200,295.37 = 80,606.25 : x
  2. Step 2: Convert to fraction form
    145,136.76/200,295.37 = 80,606.25/x
  3. Step 3: Cross multiply
    145,136.76x = 200,295.37 × 80,606.25
  4. Step 4: Simplify right side
    145,136.76x = 16,145,058,937.13
  5. Step 5: Solve for x
    x = 16,145,058,937.13/145,136.76
  6. Step 6: Final answer
    x = 111,240.31

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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.