Home / 142,328.45-196,413.32-78,666.26

Finding the Fourth Proportional to 142,328.45, 196,413.32 and 78,666.26

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Solution

The fourth proportional to 142,328.45, 196,413.32 and 78,666.26 is: 108,559.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,328.45 : 196,413.32 = 78,666.26 : x
  2. Step 2: Convert to fraction form
    142,328.45/196,413.32 = 78,666.26/x
  3. Step 3: Cross multiply
    142,328.45x = 196,413.32 × 78,666.26
  4. Step 4: Simplify right side
    142,328.45x = 15,451,100,513.18
  5. Step 5: Solve for x
    x = 15,451,100,513.18/142,328.45
  6. Step 6: Final answer
    x = 108,559.46

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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.