Finding the Fourth Proportional to 122,243,624.64, 168,680,890.48 and 82,637,330.79
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Solution
The fourth proportional to 122,243,624.64, 168,680,890.48 and 82,637,330.79 is: 114,029,165.82
Step by Step Solution
- Step 1: Write the proportion equation
122,243,624.64 : 168,680,890.48 = 82,637,330.79 : x - Step 2: Convert to fraction form
122,243,624.64/168,680,890.48 = 82,637,330.79/x - Step 3: Cross multiply
122,243,624.64x = 168,680,890.48 × 82,637,330.79 - Step 4: Simplify right side
122,243,624.64x = 13,939,338,544,547,522 - Step 5: Solve for x
x = 13,939,338,544,547,522/122,243,624.64 - Step 6: Final answer
x = 114,029,165.82
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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.