Finding the Fourth Proportional to 129,038,467.20, 193,553,553.60 and 42,780,854.40
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Solution
The fourth proportional to 129,038,467.20, 193,553,553.60 and 42,780,854.40 is: 64,169,906.66
Step by Step Solution
- Step 1: Write the proportion equation
129,038,467.20 : 193,553,553.60 = 42,780,854.40 : x - Step 2: Convert to fraction form
129,038,467.20/193,553,553.60 = 42,780,854.40/x - Step 3: Cross multiply
129,038,467.20x = 193,553,553.60 × 42,780,854.40 - Step 4: Simplify right side
129,038,467.20x = 8,280,386,395,164,195 - Step 5: Solve for x
x = 8,280,386,395,164,195/129,038,467.20 - Step 6: Final answer
x = 64,169,906.66
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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.