Home / 125,018.16-172,518.32-68,418.56

Finding the Fourth Proportional to 125,018.16, 172,518.32 and 68,418.56

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Solution

The fourth proportional to 125,018.16, 172,518.32 and 68,418.56 is: 94,413.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,018.16 : 172,518.32 = 68,418.56 : x
  2. Step 2: Convert to fraction form
    125,018.16/172,518.32 = 68,418.56/x
  3. Step 3: Cross multiply
    125,018.16x = 172,518.32 × 68,418.56
  4. Step 4: Simplify right side
    125,018.16x = 11,803,455,028.02
  5. Step 5: Solve for x
    x = 11,803,455,028.02/125,018.16
  6. Step 6: Final answer
    x = 94,413.92

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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.