Finding the Fourth Proportional to 130,709.16, 180,368.10 and 74,125.80
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Solution
The fourth proportional to 130,709.16, 180,368.10 and 74,125.80 is: 102,287.63
Step by Step Solution
- Step 1: Write the proportion equation
130,709.16 : 180,368.10 = 74,125.80 : x - Step 2: Convert to fraction form
130,709.16/180,368.10 = 74,125.80/x - Step 3: Cross multiply
130,709.16x = 180,368.10 × 74,125.80 - Step 4: Simplify right side
130,709.16x = 13,369,929,706.98 - Step 5: Solve for x
x = 13,369,929,706.98/130,709.16 - Step 6: Final answer
x = 102,287.63
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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.