Finding the Fourth Proportional to 117,042,328.14, 161,518,426.86 and 64,834,745.28
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Solution
The fourth proportional to 117,042,328.14, 161,518,426.86 and 64,834,745.28 is: 89,471,956.26
Step by Step Solution
- Step 1: Write the proportion equation
117,042,328.14 : 161,518,426.86 = 64,834,745.28 : x - Step 2: Convert to fraction form
117,042,328.14/161,518,426.86 = 64,834,745.28/x - Step 3: Cross multiply
117,042,328.14x = 161,518,426.86 × 64,834,745.28 - Step 4: Simplify right side
117,042,328.14x = 10,472,006,063,494,412 - Step 5: Solve for x
x = 10,472,006,063,494,412/117,042,328.14 - Step 6: Final answer
x = 89,471,956.26
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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.