Home / 124,054.34-171,122.11-78,040.81

Finding the Fourth Proportional to 124,054.34, 171,122.11 and 78,040.81

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Solution

The fourth proportional to 124,054.34, 171,122.11 and 78,040.81 is: 107,650.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,054.34 : 171,122.11 = 78,040.81 : x
  2. Step 2: Convert to fraction form
    124,054.34/171,122.11 = 78,040.81/x
  3. Step 3: Cross multiply
    124,054.34x = 171,122.11 × 78,040.81
  4. Step 4: Simplify right side
    124,054.34x = 13,354,507,450.40
  5. Step 5: Solve for x
    x = 13,354,507,450.40/124,054.34
  6. Step 6: Final answer
    x = 107,650.46

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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.