Home / 103,678.30-155,450.49-56,918.62

Finding the Fourth Proportional to 103,678.30, 155,450.49 and 56,918.62

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Solution

The fourth proportional to 103,678.30, 155,450.49 and 56,918.62 is: 85,341.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,678.30 : 155,450.49 = 56,918.62 : x
  2. Step 2: Convert to fraction form
    103,678.30/155,450.49 = 56,918.62/x
  3. Step 3: Cross multiply
    103,678.30x = 155,450.49 × 56,918.62
  4. Step 4: Simplify right side
    103,678.30x = 8,848,027,369.12
  5. Step 5: Solve for x
    x = 8,848,027,369.12/103,678.30
  6. Step 6: Final answer
    x = 85,341.17

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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.