Home / 126,421.14-174,494.70-78,647.34

Finding the Fourth Proportional to 126,421.14, 174,494.70 and 78,647.34

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Solution

The fourth proportional to 126,421.14, 174,494.70 and 78,647.34 is: 108,554.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,421.14 : 174,494.70 = 78,647.34 : x
  2. Step 2: Convert to fraction form
    126,421.14/174,494.70 = 78,647.34/x
  3. Step 3: Cross multiply
    126,421.14x = 174,494.70 × 78,647.34
  4. Step 4: Simplify right side
    126,421.14x = 13,723,543,999.10
  5. Step 5: Solve for x
    x = 13,723,543,999.10/126,421.14
  6. Step 6: Final answer
    x = 108,554.19

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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.