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Finding the Fourth Proportional to 158,858.56, 238,236 and 70,108.48

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Solution

The fourth proportional to 158,858.56, 238,236 and 70,108.48 is: 105,139.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,858.56 : 238,236 = 70,108.48 : x
  2. Step 2: Convert to fraction form
    158,858.56/238,236 = 70,108.48/x
  3. Step 3: Cross multiply
    158,858.56x = 238,236 × 70,108.48
  4. Step 4: Simplify right side
    158,858.56x = 16,702,363,841.28
  5. Step 5: Solve for x
    x = 16,702,363,841.28/158,858.56
  6. Step 6: Final answer
    x = 105,139.84

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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.