Finding the Fourth Proportional to 156,565,889.05, 216,048,326.74 and 90,490,666.99
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Solution
The fourth proportional to 156,565,889.05, 216,048,326.74 and 90,490,666.99 is: 124,869,837.92
Step by Step Solution
- Step 1: Write the proportion equation
156,565,889.05 : 216,048,326.74 = 90,490,666.99 : x - Step 2: Convert to fraction form
156,565,889.05/216,048,326.74 = 90,490,666.99/x - Step 3: Cross multiply
156,565,889.05x = 216,048,326.74 × 90,490,666.99 - Step 4: Simplify right side
156,565,889.05x = 19,550,357,189,228,236 - Step 5: Solve for x
x = 19,550,357,189,228,236/156,565,889.05 - Step 6: Final answer
x = 124,869,837.92
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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.