Finding the Fourth Proportional to 145,967,768.19, 201,436,053.75 and 78,986,726.64
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Solution
The fourth proportional to 145,967,768.19, 201,436,053.75 and 78,986,726.64 is: 109,001,971.53
Step by Step Solution
- Step 1: Write the proportion equation
145,967,768.19 : 201,436,053.75 = 78,986,726.64 : x - Step 2: Convert to fraction form
145,967,768.19/201,436,053.75 = 78,986,726.64/x - Step 3: Cross multiply
145,967,768.19x = 201,436,053.75 × 78,986,726.64 - Step 4: Simplify right side
145,967,768.19x = 15,910,774,512,991,598 - Step 5: Solve for x
x = 15,910,774,512,991,598/145,967,768.19 - Step 6: Final answer
x = 109,001,971.53
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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.