Finding the Fourth Proportional to 156,323.20, 215,726.88 and 84,703.28
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Solution
The fourth proportional to 156,323.20, 215,726.88 and 84,703.28 is: 116,890.99
Step by Step Solution
- Step 1: Write the proportion equation
156,323.20 : 215,726.88 = 84,703.28 : x - Step 2: Convert to fraction form
156,323.20/215,726.88 = 84,703.28/x - Step 3: Cross multiply
156,323.20x = 215,726.88 × 84,703.28 - Step 4: Simplify right side
156,323.20x = 18,272,774,320.17 - Step 5: Solve for x
x = 18,272,774,320.17/156,323.20 - Step 6: Final answer
x = 116,890.99
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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.