Home / 115,610.32-173,403.04-78,409.20

Finding the Fourth Proportional to 115,610.32, 173,403.04 and 78,409.20

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Solution

The fourth proportional to 115,610.32, 173,403.04 and 78,409.20 is: 117,605.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,610.32 : 173,403.04 = 78,409.20 : x
  2. Step 2: Convert to fraction form
    115,610.32/173,403.04 = 78,409.20/x
  3. Step 3: Cross multiply
    115,610.32x = 173,403.04 × 78,409.20
  4. Step 4: Simplify right side
    115,610.32x = 13,596,393,643.97
  5. Step 5: Solve for x
    x = 13,596,393,643.97/115,610.32
  6. Step 6: Final answer
    x = 117,605.36

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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.