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Finding the Fourth Proportional to 109,412.08, 151,000.04 and 66,998.80

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Solution

The fourth proportional to 109,412.08, 151,000.04 and 66,998.80 is: 92,465.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,412.08 : 151,000.04 = 66,998.80 : x
  2. Step 2: Convert to fraction form
    109,412.08/151,000.04 = 66,998.80/x
  3. Step 3: Cross multiply
    109,412.08x = 151,000.04 × 66,998.80
  4. Step 4: Simplify right side
    109,412.08x = 10,116,821,479.95
  5. Step 5: Solve for x
    x = 10,116,821,479.95/109,412.08
  6. Step 6: Final answer
    x = 92,465.31

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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.