Home / 185,319.36-255,739.68-100,436.40

Finding the Fourth Proportional to 185,319.36, 255,739.68 and 100,436.40

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Solution

The fourth proportional to 185,319.36, 255,739.68 and 100,436.40 is: 138,601.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,319.36 : 255,739.68 = 100,436.40 : x
  2. Step 2: Convert to fraction form
    185,319.36/255,739.68 = 100,436.40/x
  3. Step 3: Cross multiply
    185,319.36x = 255,739.68 × 100,436.40
  4. Step 4: Simplify right side
    185,319.36x = 25,685,572,796.35
  5. Step 5: Solve for x
    x = 25,685,572,796.35/185,319.36
  6. Step 6: Final answer
    x = 138,601.67

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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.