Finding the Fourth Proportional to 139,115.41, 191,788.36 and 93,157.09
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Solution
The fourth proportional to 139,115.41, 191,788.36 and 93,157.09 is: 128,428.95
Step by Step Solution
- Step 1: Write the proportion equation
139,115.41 : 191,788.36 = 93,157.09 : x - Step 2: Convert to fraction form
139,115.41/191,788.36 = 93,157.09/x - Step 3: Cross multiply
139,115.41x = 191,788.36 × 93,157.09 - Step 4: Simplify right side
139,115.41x = 17,866,445,513.47 - Step 5: Solve for x
x = 17,866,445,513.47/139,115.41 - Step 6: Final answer
x = 128,428.95
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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.