Finding the Fourth Proportional to 156,980,581.42, 216,633,202.99 and 87,382,403.76
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Solution
The fourth proportional to 156,980,581.42, 216,633,202.99 and 87,382,403.76 is: 120,587,717.54
Step by Step Solution
- Step 1: Write the proportion equation
156,980,581.42 : 216,633,202.99 = 87,382,403.76 : x - Step 2: Convert to fraction form
156,980,581.42/216,633,202.99 = 87,382,403.76/x - Step 3: Cross multiply
156,980,581.42x = 216,633,202.99 × 87,382,403.76 - Step 4: Simplify right side
156,980,581.42x = 18,929,930,010,868,928 - Step 5: Solve for x
x = 18,929,930,010,868,928/156,980,581.42 - Step 6: Final answer
x = 120,587,717.54
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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.