Finding the Fourth Proportional to 157,213,603.80, 235,643,258.70 and 75,371,689.80
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Solution
The fourth proportional to 157,213,603.80, 235,643,258.70 and 75,371,689.80 is: 112,972,606.50
Step by Step Solution
- Step 1: Write the proportion equation
157,213,603.80 : 235,643,258.70 = 75,371,689.80 : x - Step 2: Convert to fraction form
157,213,603.80/235,643,258.70 = 75,371,689.80/x - Step 3: Cross multiply
157,213,603.80x = 235,643,258.70 × 75,371,689.80 - Step 4: Simplify right side
157,213,603.80x = 17,760,830,598,197,550 - Step 5: Solve for x
x = 17,760,830,598,197,550/157,213,603.80 - Step 6: Final answer
x = 112,972,606.50
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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.