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Finding the Fourth Proportional to 154,602.48, 213,357.55 and 86,620.02

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Solution

The fourth proportional to 154,602.48, 213,357.55 and 86,620.02 is: 119,539.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,602.48 : 213,357.55 = 86,620.02 : x
  2. Step 2: Convert to fraction form
    154,602.48/213,357.55 = 86,620.02/x
  3. Step 3: Cross multiply
    154,602.48x = 213,357.55 × 86,620.02
  4. Step 4: Simplify right side
    154,602.48x = 18,481,035,248.15
  5. Step 5: Solve for x
    x = 18,481,035,248.15/154,602.48
  6. Step 6: Final answer
    x = 119,539.06

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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.