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Finding the Fourth Proportional to 170,538.95, 255,699.08 and 70,768.01

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Solution

The fourth proportional to 170,538.95, 255,699.08 and 70,768.01 is: 106,106.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,538.95 : 255,699.08 = 70,768.01 : x
  2. Step 2: Convert to fraction form
    170,538.95/255,699.08 = 70,768.01/x
  3. Step 3: Cross multiply
    170,538.95x = 255,699.08 × 70,768.01
  4. Step 4: Simplify right side
    170,538.95x = 18,095,315,601.22
  5. Step 5: Solve for x
    x = 18,095,315,601.22/170,538.95
  6. Step 6: Final answer
    x = 106,106.64

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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.