Finding the Fourth Proportional to 193,551,206.10, 290,326,809.15 and 85,845,830.10
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Solution
The fourth proportional to 193,551,206.10, 290,326,809.15 and 85,845,830.10 is: 128,768,745.15
Step by Step Solution
- Step 1: Write the proportion equation
193,551,206.10 : 290,326,809.15 = 85,845,830.10 : x - Step 2: Convert to fraction form
193,551,206.10/290,326,809.15 = 85,845,830.10/x - Step 3: Cross multiply
193,551,206.10x = 290,326,809.15 × 85,845,830.10 - Step 4: Simplify right side
193,551,206.10x = 24,923,345,931,766,020 - Step 5: Solve for x
x = 24,923,345,931,766,020/193,551,206.10 - Step 6: Final answer
x = 128,768,745.15
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1.5x scale
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.