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Finding the Fourth Proportional to 158,193.60, 218,307.16 and 86,573.64

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Solution

The fourth proportional to 158,193.60, 218,307.16 and 86,573.64 is: 119,471.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,193.60 : 218,307.16 = 86,573.64 : x
  2. Step 2: Convert to fraction form
    158,193.60/218,307.16 = 86,573.64/x
  3. Step 3: Cross multiply
    158,193.60x = 218,307.16 × 86,573.64
  4. Step 4: Simplify right side
    158,193.60x = 18,899,645,479.26
  5. Step 5: Solve for x
    x = 18,899,645,479.26/158,193.60
  6. Step 6: Final answer
    x = 119,471.62

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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.