Home / 101,821.68-152,533.85-66,654.72

Finding the Fourth Proportional to 101,821.68, 152,533.85 and 66,654.72

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Solution

The fourth proportional to 101,821.68, 152,533.85 and 66,654.72 is: 99,852.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,821.68 : 152,533.85 = 66,654.72 : x
  2. Step 2: Convert to fraction form
    101,821.68/152,533.85 = 66,654.72/x
  3. Step 3: Cross multiply
    101,821.68x = 152,533.85 × 66,654.72
  4. Step 4: Simplify right side
    101,821.68x = 10,167,101,062.27
  5. Step 5: Solve for x
    x = 10,167,101,062.27/101,821.68
  6. Step 6: Final answer
    x = 99,852.03

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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.