Finding the Fourth Proportional to 130,730.97, 180,405.23 and 74,141.13
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Solution
The fourth proportional to 130,730.97, 180,405.23 and 74,141.13 is: 102,312.77
Step by Step Solution
- Step 1: Write the proportion equation
130,730.97 : 180,405.23 = 74,141.13 : x - Step 2: Convert to fraction form
130,730.97/180,405.23 = 74,141.13/x - Step 3: Cross multiply
130,730.97x = 180,405.23 × 74,141.13 - Step 4: Simplify right side
130,730.97x = 13,375,446,708.08 - Step 5: Solve for x
x = 13,375,446,708.08/130,730.97 - Step 6: Final answer
x = 102,312.77
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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.