Finding the Fourth Proportional to 129,457,448.29, 178,693,853.12 and 103,044,252.25
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Solution
The fourth proportional to 129,457,448.29, 178,693,853.12 and 103,044,252.25 is: 142,234,956.12
Step by Step Solution
- Step 1: Write the proportion equation
129,457,448.29 : 178,693,853.12 = 103,044,252.25 : x - Step 2: Convert to fraction form
129,457,448.29/178,693,853.12 = 103,044,252.25/x - Step 3: Cross multiply
129,457,448.29x = 178,693,853.12 × 103,044,252.25 - Step 4: Simplify right side
129,457,448.29x = 18,413,374,476,421,732 - Step 5: Solve for x
x = 18,413,374,476,421,732/129,457,448.29 - Step 6: Final answer
x = 142,234,956.12
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.