Finding the Fourth Proportional to 152,160,331.98, 209,963,543.39 and 85,182,957.68
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Solution
The fourth proportional to 152,160,331.98, 209,963,543.39 and 85,182,957.68 is: 117,542,564.46
Step by Step Solution
- Step 1: Write the proportion equation
152,160,331.98 : 209,963,543.39 = 85,182,957.68 : x - Step 2: Convert to fraction form
152,160,331.98/209,963,543.39 = 85,182,957.68/x - Step 3: Cross multiply
152,160,331.98x = 209,963,543.39 × 85,182,957.68 - Step 4: Simplify right side
152,160,331.98x = 17,885,315,629,457,480 - Step 5: Solve for x
x = 17,885,315,629,457,480/152,160,331.98 - Step 6: Final answer
x = 117,542,564.46
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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.