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Finding the Fourth Proportional to 112,493.80, 168,740.70 and 91,498.60

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Solution

The fourth proportional to 112,493.80, 168,740.70 and 91,498.60 is: 137,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,493.80 : 168,740.70 = 91,498.60 : x
  2. Step 2: Convert to fraction form
    112,493.80/168,740.70 = 91,498.60/x
  3. Step 3: Cross multiply
    112,493.80x = 168,740.70 × 91,498.60
  4. Step 4: Simplify right side
    112,493.80x = 15,439,537,813.02
  5. Step 5: Solve for x
    x = 15,439,537,813.02/112,493.80
  6. Step 6: Final answer
    x = 137,247.90

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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.