Finding the Fourth Proportional to 98,765,320.49, 135,985,186.41 and 83,851,145.53
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Solution
The fourth proportional to 98,765,320.49, 135,985,186.41 and 83,851,145.53 is: 115,450,581.22
Step by Step Solution
- Step 1: Write the proportion equation
98,765,320.49 : 135,985,186.41 = 83,851,145.53 : x - Step 2: Convert to fraction form
98,765,320.49/135,985,186.41 = 83,851,145.53/x - Step 3: Cross multiply
98,765,320.49x = 135,985,186.41 × 83,851,145.53 - Step 4: Simplify right side
98,765,320.49x = 11,402,513,655,406,764 - Step 5: Solve for x
x = 11,402,513,655,406,764/98,765,320.49 - Step 6: Final answer
x = 115,450,581.22
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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.