Finding the Fourth Proportional to 139,969,251.30, 209,953,876.95 and 130,403,313.30
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Solution
The fourth proportional to 139,969,251.30, 209,953,876.95 and 130,403,313.30 is: 195,604,969.95
Step by Step Solution
- Step 1: Write the proportion equation
139,969,251.30 : 209,953,876.95 = 130,403,313.30 : x - Step 2: Convert to fraction form
139,969,251.30/209,953,876.95 = 130,403,313.30/x - Step 3: Cross multiply
139,969,251.30x = 209,953,876.95 × 130,403,313.30 - Step 4: Simplify right side
139,969,251.30x = 27,378,681,194,460,496 - Step 5: Solve for x
x = 27,378,681,194,460,496/139,969,251.30 - Step 6: Final answer
x = 195,604,969.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.