Finding the Fourth Proportional to 130,824.76, 180,519.02 and 74,225.08
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Solution
The fourth proportional to 130,824.76, 180,519.02 and 74,225.08 is: 102,419.75
Step by Step Solution
- Step 1: Write the proportion equation
130,824.76 : 180,519.02 = 74,225.08 : x - Step 2: Convert to fraction form
130,824.76/180,519.02 = 74,225.08/x - Step 3: Cross multiply
130,824.76x = 180,519.02 × 74,225.08 - Step 4: Simplify right side
130,824.76x = 13,399,038,701.02 - Step 5: Solve for x
x = 13,399,038,701.02/130,824.76 - Step 6: Final answer
x = 102,419.75
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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.