Home / 115,608.32-173,399.88-78,407.36

Finding the Fourth Proportional to 115,608.32, 173,399.88 and 78,407.36

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Solution

The fourth proportional to 115,608.32, 173,399.88 and 78,407.36 is: 117,602.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,608.32 : 173,399.88 = 78,407.36 : x
  2. Step 2: Convert to fraction form
    115,608.32/173,399.88 = 78,407.36/x
  3. Step 3: Cross multiply
    115,608.32x = 173,399.88 × 78,407.36
  4. Step 4: Simplify right side
    115,608.32x = 13,595,826,815.12
  5. Step 5: Solve for x
    x = 13,595,826,815.12/115,608.32
  6. Step 6: Final answer
    x = 117,602.49

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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.