Finding the Fourth Proportional to 137,019,231.81, 189,090,257.91 and 77,489,429.94
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Solution
The fourth proportional to 137,019,231.81, 189,090,257.91 and 77,489,429.94 is: 106,937,515.99
Step by Step Solution
- Step 1: Write the proportion equation
137,019,231.81 : 189,090,257.91 = 77,489,429.94 : x - Step 2: Convert to fraction form
137,019,231.81/189,090,257.91 = 77,489,429.94/x - Step 3: Cross multiply
137,019,231.81x = 189,090,257.91 × 77,489,429.94 - Step 4: Simplify right side
137,019,231.81x = 14,652,496,292,653,476 - Step 5: Solve for x
x = 14,652,496,292,653,476/137,019,231.81 - Step 6: Final answer
x = 106,937,515.99
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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.