Finding the Fourth Proportional to 155,402,427.99, 214,454,035.31 and 85,786,314.20
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Solution
The fourth proportional to 155,402,427.99, 214,454,035.31 and 85,786,314.20 is: 118,384,387.50
Step by Step Solution
- Step 1: Write the proportion equation
155,402,427.99 : 214,454,035.31 = 85,786,314.20 : x - Step 2: Convert to fraction form
155,402,427.99/214,454,035.31 = 85,786,314.20/x - Step 3: Cross multiply
155,402,427.99x = 214,454,035.31 × 85,786,314.20 - Step 4: Simplify right side
155,402,427.99x = 18,397,221,253,060,352 - Step 5: Solve for x
x = 18,397,221,253,060,352/155,402,427.99 - Step 6: Final answer
x = 118,384,387.50
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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.