Finding the Fourth Proportional to 102,219.84, 153,005.76 and 74,044.80
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Solution
The fourth proportional to 102,219.84, 153,005.76 and 74,044.80 is: 110,832.50
Step by Step Solution
- Step 1: Write the proportion equation
102,219.84 : 153,005.76 = 74,044.80 : x - Step 2: Convert to fraction form
102,219.84/153,005.76 = 74,044.80/x - Step 3: Cross multiply
102,219.84x = 153,005.76 × 74,044.80 - Step 4: Simplify right side
102,219.84x = 11,329,280,898.05 - Step 5: Solve for x
x = 11,329,280,898.05/102,219.84 - Step 6: Final answer
x = 110,832.50
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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.