Finding the Fourth Proportional to 137,289.25, 189,403.14 and 86,285.53
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Solution
The fourth proportional to 137,289.25, 189,403.14 and 86,285.53 is: 119,038.82
Step by Step Solution
- Step 1: Write the proportion equation
137,289.25 : 189,403.14 = 86,285.53 : x - Step 2: Convert to fraction form
137,289.25/189,403.14 = 86,285.53/x - Step 3: Cross multiply
137,289.25x = 189,403.14 × 86,285.53 - Step 4: Simplify right side
137,289.25x = 16,342,750,318.56 - Step 5: Solve for x
x = 16,342,750,318.56/137,289.25 - Step 6: Final answer
x = 119,038.82
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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.