Finding the Fourth Proportional to 155,420.07, 214,479.35 and 87,437.07
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Solution
The fourth proportional to 155,420.07, 214,479.35 and 87,437.07 is: 120,662.96
Step by Step Solution
- Step 1: Write the proportion equation
155,420.07 : 214,479.35 = 87,437.07 : x - Step 2: Convert to fraction form
155,420.07/214,479.35 = 87,437.07/x - Step 3: Cross multiply
155,420.07x = 214,479.35 × 87,437.07 - Step 4: Simplify right side
155,420.07x = 18,753,445,502.32 - Step 5: Solve for x
x = 18,753,445,502.32/155,420.07 - Step 6: Final answer
x = 120,662.96
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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.