Finding the Fourth Proportional to 139,968,326.70, 209,952,490.05 and 139,118,021.10
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Solution
The fourth proportional to 139,968,326.70, 209,952,490.05 and 139,118,021.10 is: 208,677,031.65
Step by Step Solution
- Step 1: Write the proportion equation
139,968,326.70 : 209,952,490.05 = 139,118,021.10 : x - Step 2: Convert to fraction form
139,968,326.70/209,952,490.05 = 139,118,021.10/x - Step 3: Cross multiply
139,968,326.70x = 209,952,490.05 × 139,118,021.10 - Step 4: Simplify right side
139,968,326.70x = 29,208,174,940,773,440 - Step 5: Solve for x
x = 29,208,174,940,773,440/139,968,326.70 - Step 6: Final answer
x = 208,677,031.65
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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.