Finding the Fourth Proportional to 156,988,202.64, 216,639,896.10 and 86,423,239.32
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Solution
The fourth proportional to 156,988,202.64, 216,639,896.10 and 86,423,239.32 is: 119,261,965.37
Step by Step Solution
- Step 1: Write the proportion equation
156,988,202.64 : 216,639,896.10 = 86,423,239.32 : x - Step 2: Convert to fraction form
156,988,202.64/216,639,896.10 = 86,423,239.32/x - Step 3: Cross multiply
156,988,202.64x = 216,639,896.10 × 86,423,239.32 - Step 4: Simplify right side
156,988,202.64x = 18,722,721,586,910,232 - Step 5: Solve for x
x = 18,722,721,586,910,232/156,988,202.64 - Step 6: Final answer
x = 119,261,965.37
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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.