Finding the Fourth Proportional to 163,775,423.70, 245,663,135.55 and 77,681,981.70
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Solution
The fourth proportional to 163,775,423.70, 245,663,135.55 and 77,681,981.70 is: 116,522,972.55
Step by Step Solution
- Step 1: Write the proportion equation
163,775,423.70 : 245,663,135.55 = 77,681,981.70 : x - Step 2: Convert to fraction form
163,775,423.70/245,663,135.55 = 77,681,981.70/x - Step 3: Cross multiply
163,775,423.70x = 245,663,135.55 × 77,681,981.70 - Step 4: Simplify right side
163,775,423.70x = 19,083,599,200,159,720 - Step 5: Solve for x
x = 19,083,599,200,159,720/163,775,423.70 - Step 6: Final answer
x = 116,522,972.55
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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.