Finding the Fourth Proportional to 128,882,271.36, 193,304,204.64 and 42,621,129.12
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Solution
The fourth proportional to 128,882,271.36, 193,304,204.64 and 42,621,129.12 is: 63,925,343.48
Step by Step Solution
- Step 1: Write the proportion equation
128,882,271.36 : 193,304,204.64 = 42,621,129.12 : x - Step 2: Convert to fraction form
128,882,271.36/193,304,204.64 = 42,621,129.12/x - Step 3: Cross multiply
128,882,271.36x = 193,304,204.64 × 42,621,129.12 - Step 4: Simplify right side
128,882,271.36x = 8,238,843,465,400,342 - Step 5: Solve for x
x = 8,238,843,465,400,342/128,882,271.36 - Step 6: Final answer
x = 63,925,343.48
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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.