Finding the Fourth Proportional to 137,465,924.28, 189,701,641.79 and 74,742,021.41
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Solution
The fourth proportional to 137,465,924.28, 189,701,641.79 and 74,742,021.41 is: 103,143,264.39
Step by Step Solution
- Step 1: Write the proportion equation
137,465,924.28 : 189,701,641.79 = 74,742,021.41 : x - Step 2: Convert to fraction form
137,465,924.28/189,701,641.79 = 74,742,021.41/x - Step 3: Cross multiply
137,465,924.28x = 189,701,641.79 × 74,742,021.41 - Step 4: Simplify right side
137,465,924.28x = 14,178,684,172,180,330 - Step 5: Solve for x
x = 14,178,684,172,180,330/137,465,924.28 - Step 6: Final answer
x = 103,143,264.39
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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.