Finding the Fourth Proportional to 137,483,856.41, 189,731,317.68 and 74,763,622.65
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Solution
The fourth proportional to 137,483,856.41, 189,731,317.68 and 74,763,622.65 is: 103,175,754.67
Step by Step Solution
- Step 1: Write the proportion equation
137,483,856.41 : 189,731,317.68 = 74,763,622.65 : x - Step 2: Convert to fraction form
137,483,856.41/189,731,317.68 = 74,763,622.65/x - Step 3: Cross multiply
137,483,856.41x = 189,731,317.68 × 74,763,622.65 - Step 4: Simplify right side
137,483,856.41x = 14,185,000,639,914,796 - Step 5: Solve for x
x = 14,185,000,639,914,796/137,483,856.41 - Step 6: Final answer
x = 103,175,754.67
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.