Finding the Fourth Proportional to 130,528,612.49, 180,134,624.75 and 71,796,742.47
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Solution
The fourth proportional to 130,528,612.49, 180,134,624.75 and 71,796,742.47 is: 99,082,331.58
Step by Step Solution
- Step 1: Write the proportion equation
130,528,612.49 : 180,134,624.75 = 71,796,742.47 : x - Step 2: Convert to fraction form
130,528,612.49/180,134,624.75 = 71,796,742.47/x - Step 3: Cross multiply
130,528,612.49x = 180,134,624.75 × 71,796,742.47 - Step 4: Simplify right side
130,528,612.49x = 12,933,079,262,746,854 - Step 5: Solve for x
x = 12,933,079,262,746,854/130,528,612.49 - Step 6: Final answer
x = 99,082,331.58
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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.