Finding the Fourth Proportional to 91,860,239.70, 137,790,359.55 and 69,185,423.70
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Solution
The fourth proportional to 91,860,239.70, 137,790,359.55 and 69,185,423.70 is: 103,778,135.55
Step by Step Solution
- Step 1: Write the proportion equation
91,860,239.70 : 137,790,359.55 = 69,185,423.70 : x - Step 2: Convert to fraction form
91,860,239.70/137,790,359.55 = 69,185,423.70/x - Step 3: Cross multiply
91,860,239.70x = 137,790,359.55 × 69,185,423.70 - Step 4: Simplify right side
91,860,239.70x = 9,533,084,407,242,092 - Step 5: Solve for x
x = 9,533,084,407,242,092/91,860,239.70 - Step 6: Final answer
x = 103,778,135.55
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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.