Home / 213,678.36-320,341.86-124,712.28

Finding the Fourth Proportional to 213,678.36, 320,341.86 and 124,712.28

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Solution

The fourth proportional to 213,678.36, 320,341.86 and 124,712.28 is: 186,965.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,678.36 : 320,341.86 = 124,712.28 : x
  2. Step 2: Convert to fraction form
    213,678.36/320,341.86 = 124,712.28/x
  3. Step 3: Cross multiply
    213,678.36x = 320,341.86 × 124,712.28
  4. Step 4: Simplify right side
    213,678.36x = 39,950,563,740.04
  5. Step 5: Solve for x
    x = 39,950,563,740.04/213,678.36
  6. Step 6: Final answer
    x = 186,965.89

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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.