Finding the Fourth Proportional to 137,648,497.12, 189,959,938.36 and 74,921,565.46
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Solution
The fourth proportional to 137,648,497.12, 189,959,938.36 and 74,921,565.46 is: 103,394,488.53
Step by Step Solution
- Step 1: Write the proportion equation
137,648,497.12 : 189,959,938.36 = 74,921,565.46 : x - Step 2: Convert to fraction form
137,648,497.12/189,959,938.36 = 74,921,565.46/x - Step 3: Cross multiply
137,648,497.12x = 189,959,938.36 × 74,921,565.46 - Step 4: Simplify right side
137,648,497.12x = 14,232,095,956,616,304 - Step 5: Solve for x
x = 14,232,095,956,616,304/137,648,497.12 - Step 6: Final answer
x = 103,394,488.53
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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.