Finding the Fourth Proportional to 128,260,663.08, 192,321,784.74 and 58,192,649.40
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Solution
The fourth proportional to 128,260,663.08, 192,321,784.74 and 58,192,649.40 is: 87,257,573.15
Step by Step Solution
- Step 1: Write the proportion equation
128,260,663.08 : 192,321,784.74 = 58,192,649.40 : x - Step 2: Convert to fraction form
128,260,663.08/192,321,784.74 = 58,192,649.40/x - Step 3: Cross multiply
128,260,663.08x = 192,321,784.74 × 58,192,649.40 - Step 4: Simplify right side
128,260,663.08x = 11,191,714,191,357,090 - Step 5: Solve for x
x = 11,191,714,191,357,090/128,260,663.08 - Step 6: Final answer
x = 87,257,573.15
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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.