Finding the Fourth Proportional to 155,382,679.46, 214,428,118.65 and 85,768,073.48
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Solution
The fourth proportional to 155,382,679.46, 214,428,118.65 and 85,768,073.48 is: 118,359,952.99
Step by Step Solution
- Step 1: Write the proportion equation
155,382,679.46 : 214,428,118.65 = 85,768,073.48 : x - Step 2: Convert to fraction form
155,382,679.46/214,428,118.65 = 85,768,073.48/x - Step 3: Cross multiply
155,382,679.46x = 214,428,118.65 × 85,768,073.48 - Step 4: Simplify right side
155,382,679.46x = 18,391,086,636,551,360 - Step 5: Solve for x
x = 18,391,086,636,551,360/155,382,679.46 - Step 6: Final answer
x = 118,359,952.99
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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.