Finding the Fourth Proportional to 115,465,903.98, 159,342,938.74 and 69,056,156.53
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Solution
The fourth proportional to 115,465,903.98, 159,342,938.74 and 69,056,156.53 is: 95,297,490.78
Step by Step Solution
- Step 1: Write the proportion equation
115,465,903.98 : 159,342,938.74 = 69,056,156.53 : x - Step 2: Convert to fraction form
115,465,903.98/159,342,938.74 = 69,056,156.53/x - Step 3: Cross multiply
115,465,903.98x = 159,342,938.74 × 69,056,156.53 - Step 4: Simplify right side
115,465,903.98x = 11,003,610,919,579,642 - Step 5: Solve for x
x = 11,003,610,919,579,642/115,465,903.98 - Step 6: Final answer
x = 95,297,490.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.