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Finding the Fourth Proportional to 159,536.51, 220,157.55 and 86,940.05

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Solution

The fourth proportional to 159,536.51, 220,157.55 and 86,940.05 is: 119,975.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,536.51 : 220,157.55 = 86,940.05 : x
  2. Step 2: Convert to fraction form
    159,536.51/220,157.55 = 86,940.05/x
  3. Step 3: Cross multiply
    159,536.51x = 220,157.55 × 86,940.05
  4. Step 4: Simplify right side
    159,536.51x = 19,140,508,404.88
  5. Step 5: Solve for x
    x = 19,140,508,404.88/159,536.51
  6. Step 6: Final answer
    x = 119,975.72

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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.