Home / 138,413.23-191,010.21-74,751.04

Finding the Fourth Proportional to 138,413.23, 191,010.21 and 74,751.04

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Solution

The fourth proportional to 138,413.23, 191,010.21 and 74,751.04 is: 103,156.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,413.23 : 191,010.21 = 74,751.04 : x
  2. Step 2: Convert to fraction form
    138,413.23/191,010.21 = 74,751.04/x
  3. Step 3: Cross multiply
    138,413.23x = 191,010.21 × 74,751.04
  4. Step 4: Simplify right side
    138,413.23x = 14,278,211,848.12
  5. Step 5: Solve for x
    x = 14,278,211,848.12/138,413.23
  6. Step 6: Final answer
    x = 103,156.41

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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.