Finding the Fourth Proportional to 155,005.68, 213,893.06 and 87,007.08
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Solution
The fourth proportional to 155,005.68, 213,893.06 and 87,007.08 is: 120,061.48
Step by Step Solution
- Step 1: Write the proportion equation
155,005.68 : 213,893.06 = 87,007.08 : x - Step 2: Convert to fraction form
155,005.68/213,893.06 = 87,007.08/x - Step 3: Cross multiply
155,005.68x = 213,893.06 × 87,007.08 - Step 4: Simplify right side
155,005.68x = 18,610,210,582.86 - Step 5: Solve for x
x = 18,610,210,582.86/155,005.68 - Step 6: Final answer
x = 120,061.48
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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.