Finding the Fourth Proportional to 193,536,263.20, 290,437,105.20 and 85,908,128.80
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Solution
The fourth proportional to 193,536,263.20, 290,437,105.20 and 85,908,128.80 is: 128,921,101.55
Step by Step Solution
- Step 1: Write the proportion equation
193,536,263.20 : 290,437,105.20 = 85,908,128.80 : x - Step 2: Convert to fraction form
193,536,263.20/290,437,105.20 = 85,908,128.80/x - Step 3: Cross multiply
193,536,263.20x = 290,437,105.20 × 85,908,128.80 - Step 4: Simplify right side
193,536,263.20x = 24,950,908,241,820,748 - Step 5: Solve for x
x = 24,950,908,241,820,748/193,536,263.20 - Step 6: Final answer
x = 128,921,101.55
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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.