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Finding the Fourth Proportional to 158,787, 238,181.04 and 47,979

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Solution

The fourth proportional to 158,787, 238,181.04 and 47,979 is: 71,968.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,787 : 238,181.04 = 47,979 : x
  2. Step 2: Convert to fraction form
    158,787/238,181.04 = 47,979/x
  3. Step 3: Cross multiply
    158,787x = 238,181.04 × 47,979
  4. Step 4: Simplify right side
    158,787x = 11,427,688,118.16
  5. Step 5: Solve for x
    x = 11,427,688,118.16/158,787
  6. Step 6: Final answer
    x = 71,968.66

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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.