Finding the Fourth Proportional to 130,972.08, 180,742.68 and 71,356.08
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Solution
The fourth proportional to 130,972.08, 180,742.68 and 71,356.08 is: 98,472.05
Step by Step Solution
- Step 1: Write the proportion equation
130,972.08 : 180,742.68 = 71,356.08 : x - Step 2: Convert to fraction form
130,972.08/180,742.68 = 71,356.08/x - Step 3: Cross multiply
130,972.08x = 180,742.68 × 71,356.08 - Step 4: Simplify right side
130,972.08x = 12,897,089,133.49 - Step 5: Solve for x
x = 12,897,089,133.49/130,972.08 - Step 6: Final answer
x = 98,472.05
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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.