Finding the Fourth Proportional to 102,569.80, 153,854.70 and 85,289.80
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Solution
The fourth proportional to 102,569.80, 153,854.70 and 85,289.80 is: 127,934.70
Step by Step Solution
- Step 1: Write the proportion equation
102,569.80 : 153,854.70 = 85,289.80 : x - Step 2: Convert to fraction form
102,569.80/153,854.70 = 85,289.80/x - Step 3: Cross multiply
102,569.80x = 153,854.70 × 85,289.80 - Step 4: Simplify right side
102,569.80x = 13,122,236,592.06 - Step 5: Solve for x
x = 13,122,236,592.06/102,569.80 - Step 6: Final answer
x = 127,934.70
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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.