Finding the Fourth Proportional to 156,439,412.24, 215,883,140.84 and 86,820,749.84
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Solution
The fourth proportional to 156,439,412.24, 215,883,140.84 and 86,820,749.84 is: 119,810,832.18
Step by Step Solution
- Step 1: Write the proportion equation
156,439,412.24 : 215,883,140.84 = 86,820,749.84 : x - Step 2: Convert to fraction form
156,439,412.24/215,883,140.84 = 86,820,749.84/x - Step 3: Cross multiply
156,439,412.24x = 215,883,140.84 × 86,820,749.84 - Step 4: Simplify right side
156,439,412.24x = 18,743,136,165,543,128 - Step 5: Solve for x
x = 18,743,136,165,543,128/156,439,412.24 - Step 6: Final answer
x = 119,810,832.18
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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.