Finding the Fourth Proportional to 130,470.08, 180,123.36 and 85,887.68
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Solution
The fourth proportional to 130,470.08, 180,123.36 and 85,887.68 is: 118,574.14
Step by Step Solution
- Step 1: Write the proportion equation
130,470.08 : 180,123.36 = 85,887.68 : x - Step 2: Convert to fraction form
130,470.08/180,123.36 = 85,887.68/x - Step 3: Cross multiply
130,470.08x = 180,123.36 × 85,887.68 - Step 4: Simplify right side
130,470.08x = 15,470,377,504.20 - Step 5: Solve for x
x = 15,470,377,504.20/130,470.08 - Step 6: Final answer
x = 118,574.14
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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.