Finding the Fourth Proportional to 153,895.24, 212,349.12 and 85,908.70
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Solution
The fourth proportional to 153,895.24, 212,349.12 and 85,908.70 is: 118,539.32
Step by Step Solution
- Step 1: Write the proportion equation
153,895.24 : 212,349.12 = 85,908.70 : x - Step 2: Convert to fraction form
153,895.24/212,349.12 = 85,908.70/x - Step 3: Cross multiply
153,895.24x = 212,349.12 × 85,908.70 - Step 4: Simplify right side
153,895.24x = 18,242,636,845.34 - Step 5: Solve for x
x = 18,242,636,845.34/153,895.24 - Step 6: Final answer
x = 118,539.32
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1.5x scale
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.