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Finding the Fourth Proportional to 123,805.56, 170,855.76 and 70,089.48

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Solution

The fourth proportional to 123,805.56, 170,855.76 and 70,089.48 is: 96,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,805.56 : 170,855.76 = 70,089.48 : x
  2. Step 2: Convert to fraction form
    123,805.56/170,855.76 = 70,089.48/x
  3. Step 3: Cross multiply
    123,805.56x = 170,855.76 × 70,089.48
  4. Step 4: Simplify right side
    123,805.56x = 11,975,191,373.40
  5. Step 5: Solve for x
    x = 11,975,191,373.40/123,805.56
  6. Step 6: Final answer
    x = 96,725.80

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1.5x scale

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.