Finding the Fourth Proportional to 128,563,280.60, 192,896,015.49 and 41,138,264.21
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Solution
The fourth proportional to 128,563,280.60, 192,896,015.49 and 41,138,264.21 is: 61,723,745.79
Step by Step Solution
- Step 1: Write the proportion equation
128,563,280.60 : 192,896,015.49 = 41,138,264.21 : x - Step 2: Convert to fraction form
128,563,280.60/192,896,015.49 = 41,138,264.21/x - Step 3: Cross multiply
128,563,280.60x = 192,896,015.49 × 41,138,264.21 - Step 4: Simplify right side
128,563,280.60x = 7,935,407,249,319,393 - Step 5: Solve for x
x = 7,935,407,249,319,393/128,563,280.60 - Step 6: Final answer
x = 61,723,745.79
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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.