Finding the Fourth Proportional to 121,863,538.72, 168,171,683.44 and 69,653,695.41
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Solution
The fourth proportional to 121,863,538.72, 168,171,683.44 and 69,653,695.41 is: 96,122,099.67
Step by Step Solution
- Step 1: Write the proportion equation
121,863,538.72 : 168,171,683.44 = 69,653,695.41 : x - Step 2: Convert to fraction form
121,863,538.72/168,171,683.44 = 69,653,695.41/x - Step 3: Cross multiply
121,863,538.72x = 168,171,683.44 × 69,653,695.41 - Step 4: Simplify right side
121,863,538.72x = 11,713,779,214,916,700 - Step 5: Solve for x
x = 11,713,779,214,916,700/121,863,538.72 - Step 6: Final answer
x = 96,122,099.67
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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.