Finding the Fourth Proportional to 128,957,656.20, 193,436,484.30 and 99,732,337.80
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Solution
The fourth proportional to 128,957,656.20, 193,436,484.30 and 99,732,337.80 is: 149,598,506.70
Step by Step Solution
- Step 1: Write the proportion equation
128,957,656.20 : 193,436,484.30 = 99,732,337.80 : x - Step 2: Convert to fraction form
128,957,656.20/193,436,484.30 = 99,732,337.80/x - Step 3: Cross multiply
128,957,656.20x = 193,436,484.30 × 99,732,337.80 - Step 4: Simplify right side
128,957,656.20x = 19,291,872,795,051,996 - Step 5: Solve for x
x = 19,291,872,795,051,996/128,957,656.20 - Step 6: Final answer
x = 149,598,506.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.