Home / 139,326.12-192,267-75,663.36

Finding the Fourth Proportional to 139,326.12, 192,267 and 75,663.36

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Solution

The fourth proportional to 139,326.12, 192,267 and 75,663.36 is: 104,413.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,326.12 : 192,267 = 75,663.36 : x
  2. Step 2: Convert to fraction form
    139,326.12/192,267 = 75,663.36/x
  3. Step 3: Cross multiply
    139,326.12x = 192,267 × 75,663.36
  4. Step 4: Simplify right side
    139,326.12x = 14,547,567,237.12
  5. Step 5: Solve for x
    x = 14,547,567,237.12/139,326.12
  6. Step 6: Final answer
    x = 104,413.78

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1.5x scale

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.