Finding the Fourth Proportional to 137,309,784.36, 189,490,919.23 and 74,585,862.55
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Solution
The fourth proportional to 137,309,784.36, 189,490,919.23 and 74,585,862.55 is: 102,930,346.32
Step by Step Solution
- Step 1: Write the proportion equation
137,309,784.36 : 189,490,919.23 = 74,585,862.55 : x - Step 2: Convert to fraction form
137,309,784.36/189,490,919.23 = 74,585,862.55/x - Step 3: Cross multiply
137,309,784.36x = 189,490,919.23 × 74,585,862.55 - Step 4: Simplify right side
137,309,784.36x = 14,133,343,656,492,026 - Step 5: Solve for x
x = 14,133,343,656,492,026/137,309,784.36 - Step 6: Final answer
x = 102,930,346.32
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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.