Home / 135,010.98-186,337.89-78,455.16

Finding the Fourth Proportional to 135,010.98, 186,337.89 and 78,455.16

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Solution

The fourth proportional to 135,010.98, 186,337.89 and 78,455.16 is: 108,281.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,010.98 : 186,337.89 = 78,455.16 : x
  2. Step 2: Convert to fraction form
    135,010.98/186,337.89 = 78,455.16/x
  3. Step 3: Cross multiply
    135,010.98x = 186,337.89 × 78,455.16
  4. Step 4: Simplify right side
    135,010.98x = 14,619,168,974.01
  5. Step 5: Solve for x
    x = 14,619,168,974.01/135,010.98
  6. Step 6: Final answer
    x = 108,281.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.