Finding the Fourth Proportional to 108,807,979.70, 163,211,969.55 and 84,149,117.30
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Solution
The fourth proportional to 108,807,979.70, 163,211,969.55 and 84,149,117.30 is: 126,223,675.95
Step by Step Solution
- Step 1: Write the proportion equation
108,807,979.70 : 163,211,969.55 = 84,149,117.30 : x - Step 2: Convert to fraction form
108,807,979.70/163,211,969.55 = 84,149,117.30/x - Step 3: Cross multiply
108,807,979.70x = 163,211,969.55 × 84,149,117.30 - Step 4: Simplify right side
108,807,979.70x = 13,734,143,170,426,978 - Step 5: Solve for x
x = 13,734,143,170,426,978/108,807,979.70 - Step 6: Final answer
x = 126,223,675.95
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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.