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Finding the Fourth Proportional to 105,964.98, 158,799.67 and 79,638.90

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Solution

The fourth proportional to 105,964.98, 158,799.67 and 79,638.90 is: 119,347.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,964.98 : 158,799.67 = 79,638.90 : x
  2. Step 2: Convert to fraction form
    105,964.98/158,799.67 = 79,638.90/x
  3. Step 3: Cross multiply
    105,964.98x = 158,799.67 × 79,638.90
  4. Step 4: Simplify right side
    105,964.98x = 12,646,631,039.16
  5. Step 5: Solve for x
    x = 12,646,631,039.16/105,964.98
  6. Step 6: Final answer
    x = 119,347.27

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1.5x scale

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.