Finding the Fourth Proportional to 156,381,479.15, 215,041,166.15 and 135,719,053.07
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Solution
The fourth proportional to 156,381,479.15, 215,041,166.15 and 135,719,053.07 is: 186,628,132.68
Step by Step Solution
- Step 1: Write the proportion equation
156,381,479.15 : 215,041,166.15 = 135,719,053.07 : x - Step 2: Convert to fraction form
156,381,479.15/215,041,166.15 = 135,719,053.07/x - Step 3: Cross multiply
156,381,479.15x = 215,041,166.15 × 135,719,053.07 - Step 4: Simplify right side
156,381,479.15x = 29,185,183,439,192,736 - Step 5: Solve for x
x = 29,185,183,439,192,736/156,381,479.15 - Step 6: Final answer
x = 186,628,132.68
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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.