Finding the Fourth Proportional to 135,359.06, 186,792.80 and 74,929.70
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Solution
The fourth proportional to 135,359.06, 186,792.80 and 74,929.70 is: 103,401.49
Step by Step Solution
- Step 1: Write the proportion equation
135,359.06 : 186,792.80 = 74,929.70 : x - Step 2: Convert to fraction form
135,359.06/186,792.80 = 74,929.70/x - Step 3: Cross multiply
135,359.06x = 186,792.80 × 74,929.70 - Step 4: Simplify right side
135,359.06x = 13,996,328,466.16 - Step 5: Solve for x
x = 13,996,328,466.16/135,359.06 - Step 6: Final answer
x = 103,401.49
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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.