Finding the Fourth Proportional to 142,153.12, 196,124.10 and 93,779.08
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Solution
The fourth proportional to 142,153.12, 196,124.10 and 93,779.08 is: 129,383.99
Step by Step Solution
- Step 1: Write the proportion equation
142,153.12 : 196,124.10 = 93,779.08 : x - Step 2: Convert to fraction form
142,153.12/196,124.10 = 93,779.08/x - Step 3: Cross multiply
142,153.12x = 196,124.10 × 93,779.08 - Step 4: Simplify right side
142,153.12x = 18,392,337,663.83 - Step 5: Solve for x
x = 18,392,337,663.83/142,153.12 - Step 6: Final answer
x = 129,383.99
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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.