Finding the Fourth Proportional to 157,906,543.08, 217,896,405.57 and 87,340,634.63
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Solution
The fourth proportional to 157,906,543.08, 217,896,405.57 and 87,340,634.63 is: 120,521,987.08
Step by Step Solution
- Step 1: Write the proportion equation
157,906,543.08 : 217,896,405.57 = 87,340,634.63 : x - Step 2: Convert to fraction form
157,906,543.08/217,896,405.57 = 87,340,634.63/x - Step 3: Cross multiply
157,906,543.08x = 217,896,405.57 × 87,340,634.63 - Step 4: Simplify right side
157,906,543.08x = 19,031,210,344,990,184 - Step 5: Solve for x
x = 19,031,210,344,990,184/157,906,543.08 - Step 6: Final answer
x = 120,521,987.08
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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.