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Finding the Fourth Proportional to 154,416.08, 213,092.16 and 87,348.08

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Solution

The fourth proportional to 154,416.08, 213,092.16 and 87,348.08 is: 120,539.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,416.08 : 213,092.16 = 87,348.08 : x
  2. Step 2: Convert to fraction form
    154,416.08/213,092.16 = 87,348.08/x
  3. Step 3: Cross multiply
    154,416.08x = 213,092.16 × 87,348.08
  4. Step 4: Simplify right side
    154,416.08x = 18,613,191,039.05
  5. Step 5: Solve for x
    x = 18,613,191,039.05/154,416.08
  6. Step 6: Final answer
    x = 120,539.20

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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.