Finding the Fourth Proportional to 161,808,015.70, 242,712,023.55 and 54,102,639.70
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Solution
The fourth proportional to 161,808,015.70, 242,712,023.55 and 54,102,639.70 is: 81,153,959.55
Step by Step Solution
- Step 1: Write the proportion equation
161,808,015.70 : 242,712,023.55 = 54,102,639.70 : x - Step 2: Convert to fraction form
161,808,015.70/242,712,023.55 = 54,102,639.70/x - Step 3: Cross multiply
161,808,015.70x = 242,712,023.55 × 54,102,639.70 - Step 4: Simplify right side
161,808,015.70x = 13,131,361,160,983,566 - Step 5: Solve for x
x = 13,131,361,160,983,566/161,808,015.70 - Step 6: Final answer
x = 81,153,959.55
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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.