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Finding the Fourth Proportional to 112,366.80, 168,659.40 and 87,675.60

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Solution

The fourth proportional to 112,366.80, 168,659.40 and 87,675.60 is: 131,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,366.80 : 168,659.40 = 87,675.60 : x
  2. Step 2: Convert to fraction form
    112,366.80/168,659.40 = 87,675.60/x
  3. Step 3: Cross multiply
    112,366.80x = 168,659.40 × 87,675.60
  4. Step 4: Simplify right side
    112,366.80x = 14,787,314,090.64
  5. Step 5: Solve for x
    x = 14,787,314,090.64/112,366.80
  6. Step 6: Final answer
    x = 131,598.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.