Finding the Fourth Proportional to 153,211.70, 229,817.55 and 74,479.70
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Solution
The fourth proportional to 153,211.70, 229,817.55 and 74,479.70 is: 111,719.55
Step by Step Solution
- Step 1: Write the proportion equation
153,211.70 : 229,817.55 = 74,479.70 : x - Step 2: Convert to fraction form
153,211.70/229,817.55 = 74,479.70/x - Step 3: Cross multiply
153,211.70x = 229,817.55 × 74,479.70 - Step 4: Simplify right side
153,211.70x = 17,116,742,178.74 - Step 5: Solve for x
x = 17,116,742,178.74/153,211.70 - Step 6: Final answer
x = 111,719.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.