Finding the Fourth Proportional to 156,424,891.50, 216,045,509.18 and 103,018,293.99
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Solution
The fourth proportional to 156,424,891.50, 216,045,509.18 and 103,018,293.99 is: 142,283,236.17
Step by Step Solution
- Step 1: Write the proportion equation
156,424,891.50 : 216,045,509.18 = 103,018,293.99 : x - Step 2: Convert to fraction form
156,424,891.50/216,045,509.18 = 103,018,293.99/x - Step 3: Cross multiply
156,424,891.50x = 216,045,509.18 × 103,018,293.99 - Step 4: Simplify right side
156,424,891.50x = 22,256,639,779,409,392 - Step 5: Solve for x
x = 22,256,639,779,409,392/156,424,891.50 - Step 6: Final answer
x = 142,283,236.17
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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.