Finding the Fourth Proportional to 168,497,115.40, 252,745,673.10 and 139,775,681.80
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Solution
The fourth proportional to 168,497,115.40, 252,745,673.10 and 139,775,681.80 is: 209,663,522.70
Step by Step Solution
- Step 1: Write the proportion equation
168,497,115.40 : 252,745,673.10 = 139,775,681.80 : x - Step 2: Convert to fraction form
168,497,115.40/252,745,673.10 = 139,775,681.80/x - Step 3: Cross multiply
168,497,115.40x = 252,745,673.10 × 139,775,681.80 - Step 4: Simplify right side
168,497,115.40x = 35,327,698,779,552,420 - Step 5: Solve for x
x = 35,327,698,779,552,420/168,497,115.40 - Step 6: Final answer
x = 209,663,522.70
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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.