Home / 345,178.14-517,796.78-105,346.05

Finding the Fourth Proportional to 345,178.14, 517,796.78 and 105,346.05

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Solution

The fourth proportional to 345,178.14, 517,796.78 and 105,346.05 is: 158,028.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,178.14 : 517,796.78 = 105,346.05 : x
  2. Step 2: Convert to fraction form
    345,178.14/517,796.78 = 105,346.05/x
  3. Step 3: Cross multiply
    345,178.14x = 517,796.78 × 105,346.05
  4. Step 4: Simplify right side
    345,178.14x = 54,547,844,948.99
  5. Step 5: Solve for x
    x = 54,547,844,948.99/345,178.14
  6. Step 6: Final answer
    x = 158,028.10

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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.