Finding the Fourth Proportional to 159,643,423.20, 239,465,134.80 and 121,379,671.20
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Solution
The fourth proportional to 159,643,423.20, 239,465,134.80 and 121,379,671.20 is: 182,069,506.80
Step by Step Solution
- Step 1: Write the proportion equation
159,643,423.20 : 239,465,134.80 = 121,379,671.20 : x - Step 2: Convert to fraction form
159,643,423.20/239,465,134.80 = 121,379,671.20/x - Step 3: Cross multiply
159,643,423.20x = 239,465,134.80 × 121,379,671.20 - Step 4: Simplify right side
159,643,423.20x = 29,066,199,325,887,680 - Step 5: Solve for x
x = 29,066,199,325,887,680/159,643,423.20 - Step 6: Final answer
x = 182,069,506.80
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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.