Finding the Fourth Proportional to 135,973.24, 187,628.62 and 78,603.47
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Solution
The fourth proportional to 135,973.24, 187,628.62 and 78,603.47 is: 108,464.43
Step by Step Solution
- Step 1: Write the proportion equation
135,973.24 : 187,628.62 = 78,603.47 : x - Step 2: Convert to fraction form
135,973.24/187,628.62 = 78,603.47/x - Step 3: Cross multiply
135,973.24x = 187,628.62 × 78,603.47 - Step 4: Simplify right side
135,973.24x = 14,748,260,603.31 - Step 5: Solve for x
x = 14,748,260,603.31/135,973.24 - Step 6: Final answer
x = 108,464.43
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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.