Finding the Fourth Proportional to 197,808,921.16, 272,992,653.18 and 109,731,316.12
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Solution
The fourth proportional to 197,808,921.16, 272,992,653.18 and 109,731,316.12 is: 151,438,281.70
Step by Step Solution
- Step 1: Write the proportion equation
197,808,921.16 : 272,992,653.18 = 109,731,316.12 : x - Step 2: Convert to fraction form
197,808,921.16/272,992,653.18 = 109,731,316.12/x - Step 3: Cross multiply
197,808,921.16x = 272,992,653.18 × 109,731,316.12 - Step 4: Simplify right side
197,808,921.16x = 29,955,843,124,532,104 - Step 5: Solve for x
x = 29,955,843,124,532,104/197,808,921.16 - Step 6: Final answer
x = 151,438,281.70
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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.