Finding the Fourth Proportional to 155,316.87, 232,633.80 and 128,357.31
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Solution
The fourth proportional to 155,316.87, 232,633.80 and 128,357.31 is: 192,253.74
Step by Step Solution
- Step 1: Write the proportion equation
155,316.87 : 232,633.80 = 128,357.31 : x - Step 2: Convert to fraction form
155,316.87/232,633.80 = 128,357.31/x - Step 3: Cross multiply
155,316.87x = 232,633.80 × 128,357.31 - Step 4: Simplify right side
155,316.87x = 29,860,248,783.08 - Step 5: Solve for x
x = 29,860,248,783.08/155,316.87 - Step 6: Final answer
x = 192,253.74
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.