Home / 356,128.09-534,219.80-103,412.75

Finding the Fourth Proportional to 356,128.09, 534,219.80 and 103,412.75

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Solution

The fourth proportional to 356,128.09, 534,219.80 and 103,412.75 is: 155,127.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,128.09 : 534,219.80 = 103,412.75 : x
  2. Step 2: Convert to fraction form
    356,128.09/534,219.80 = 103,412.75/x
  3. Step 3: Cross multiply
    356,128.09x = 534,219.80 × 103,412.75
  4. Step 4: Simplify right side
    356,128.09x = 55,245,138,622.45
  5. Step 5: Solve for x
    x = 55,245,138,622.45/356,128.09
  6. Step 6: Final answer
    x = 155,127.16

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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.