Finding the Fourth Proportional to 155,909.17, 215,154.68 and 84,289.17
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Solution
The fourth proportional to 155,909.17, 215,154.68 and 84,289.17 is: 116,319.07
Step by Step Solution
- Step 1: Write the proportion equation
155,909.17 : 215,154.68 = 84,289.17 : x - Step 2: Convert to fraction form
155,909.17/215,154.68 = 84,289.17/x - Step 3: Cross multiply
155,909.17x = 215,154.68 × 84,289.17 - Step 4: Simplify right side
155,909.17x = 18,135,209,784.20 - Step 5: Solve for x
x = 18,135,209,784.20/155,909.17 - Step 6: Final answer
x = 116,319.07
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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.