Home / 102,705.40-154,173.30-61,175.80

Finding the Fourth Proportional to 102,705.40, 154,173.30 and 61,175.80

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Solution

The fourth proportional to 102,705.40, 154,173.30 and 61,175.80 is: 91,832.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,705.40 : 154,173.30 = 61,175.80 : x
  2. Step 2: Convert to fraction form
    102,705.40/154,173.30 = 61,175.80/x
  3. Step 3: Cross multiply
    102,705.40x = 154,173.30 × 61,175.80
  4. Step 4: Simplify right side
    102,705.40x = 9,431,674,966.14
  5. Step 5: Solve for x
    x = 9,431,674,966.14/102,705.40
  6. Step 6: Final answer
    x = 91,832.32

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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.