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Finding the Fourth Proportional to 154,416.58, 213,092.85 and 87,348.58

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Solution

The fourth proportional to 154,416.58, 213,092.85 and 87,348.58 is: 120,539.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,416.58 : 213,092.85 = 87,348.58 : x
  2. Step 2: Convert to fraction form
    154,416.58/213,092.85 = 87,348.58/x
  3. Step 3: Cross multiply
    154,416.58x = 213,092.85 × 87,348.58
  4. Step 4: Simplify right side
    154,416.58x = 18,613,357,855.65
  5. Step 5: Solve for x
    x = 18,613,357,855.65/154,416.58
  6. Step 6: Final answer
    x = 120,539.89

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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.