Home / 217,856.08-300,656.10-121,071.16

Finding the Fourth Proportional to 217,856.08, 300,656.10 and 121,071.16

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Solution

The fourth proportional to 217,856.08, 300,656.10 and 121,071.16 is: 167,086.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,856.08 : 300,656.10 = 121,071.16 : x
  2. Step 2: Convert to fraction form
    217,856.08/300,656.10 = 121,071.16/x
  3. Step 3: Cross multiply
    217,856.08x = 300,656.10 × 121,071.16
  4. Step 4: Simplify right side
    217,856.08x = 36,400,782,788.08
  5. Step 5: Solve for x
    x = 36,400,782,788.08/217,856.08
  6. Step 6: Final answer
    x = 167,086.38

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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.