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Finding the Fourth Proportional to 157,558.88, 217,511.52 and 121,668.32

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Solution

The fourth proportional to 157,558.88, 217,511.52 and 121,668.32 is: 167,964.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,558.88 : 217,511.52 = 121,668.32 : x
  2. Step 2: Convert to fraction form
    157,558.88/217,511.52 = 121,668.32/x
  3. Step 3: Cross multiply
    157,558.88x = 217,511.52 × 121,668.32
  4. Step 4: Simplify right side
    157,558.88x = 26,464,261,219.05
  5. Step 5: Solve for x
    x = 26,464,261,219.05/157,558.88
  6. Step 6: Final answer
    x = 167,964.26

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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.