Home / 115,436.16-173,140.80-31,192.32

Finding the Fourth Proportional to 115,436.16, 173,140.80 and 31,192.32

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Solution

The fourth proportional to 115,436.16, 173,140.80 and 31,192.32 is: 46,784.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,436.16 : 173,140.80 = 31,192.32 : x
  2. Step 2: Convert to fraction form
    115,436.16/173,140.80 = 31,192.32/x
  3. Step 3: Cross multiply
    115,436.16x = 173,140.80 × 31,192.32
  4. Step 4: Simplify right side
    115,436.16x = 5,400,663,238.66
  5. Step 5: Solve for x
    x = 5,400,663,238.66/115,436.16
  6. Step 6: Final answer
    x = 46,784.85

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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.