Finding the Fourth Proportional to 116,640,603.80, 174,960,905.70 and 86,407,515.80
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Solution
The fourth proportional to 116,640,603.80, 174,960,905.70 and 86,407,515.80 is: 129,611,273.70
Step by Step Solution
- Step 1: Write the proportion equation
116,640,603.80 : 174,960,905.70 = 86,407,515.80 : x - Step 2: Convert to fraction form
116,640,603.80/174,960,905.70 = 86,407,515.80/x - Step 3: Cross multiply
116,640,603.80x = 174,960,905.70 × 86,407,515.80 - Step 4: Simplify right side
116,640,603.80x = 15,117,937,223,655,058 - Step 5: Solve for x
x = 15,117,937,223,655,058/116,640,603.80 - Step 6: Final answer
x = 129,611,273.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.