Finding the Fourth Proportional to 128,658,012, 177,549,416.88 and 69,920,675.70
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Solution
The fourth proportional to 128,658,012, 177,549,416.88 and 69,920,675.70 is: 96,491,271.75
Step by Step Solution
- Step 1: Write the proportion equation
128,658,012 : 177,549,416.88 = 69,920,675.70 : x - Step 2: Convert to fraction form
128,658,012/177,549,416.88 = 69,920,675.70/x - Step 3: Cross multiply
128,658,012x = 177,549,416.88 × 69,920,675.70 - Step 4: Simplify right side
128,658,012x = 12,414,375,198,390,586 - Step 5: Solve for x
x = 12,414,375,198,390,586/128,658,012 - Step 6: Final answer
x = 96,491,271.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.