Finding the Fourth Proportional to 128,858,316.13, 177,824,505.29 and 70,911,564.13
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Solution
The fourth proportional to 128,858,316.13, 177,824,505.29 and 70,911,564.13 is: 97,857,974.48
Step by Step Solution
- Step 1: Write the proportion equation
128,858,316.13 : 177,824,505.29 = 70,911,564.13 : x - Step 2: Convert to fraction form
128,858,316.13/177,824,505.29 = 70,911,564.13/x - Step 3: Cross multiply
128,858,316.13x = 177,824,505.29 × 70,911,564.13 - Step 4: Simplify right side
128,858,316.13x = 12,609,813,810,757,358 - Step 5: Solve for x
x = 12,609,813,810,757,358/128,858,316.13 - Step 6: Final answer
x = 97,857,974.48
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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.