Finding the Fourth Proportional to 128,317,421.52, 192,399,267.12 and 40,841,153.40
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Solution
The fourth proportional to 128,317,421.52, 192,399,267.12 and 40,841,153.40 is: 61,237,265.29
Step by Step Solution
- Step 1: Write the proportion equation
128,317,421.52 : 192,399,267.12 = 40,841,153.40 : x - Step 2: Convert to fraction form
128,317,421.52/192,399,267.12 = 40,841,153.40/x - Step 3: Cross multiply
128,317,421.52x = 192,399,267.12 × 40,841,153.40 - Step 4: Simplify right side
128,317,421.52x = 7,857,807,982,495,496 - Step 5: Solve for x
x = 7,857,807,982,495,496/128,317,421.52 - Step 6: Final answer
x = 61,237,265.29
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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.