Finding the Fourth Proportional to 157,906,547.83, 217,896,412.12 and 87,340,639.38
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Solution
The fourth proportional to 157,906,547.83, 217,896,412.12 and 87,340,639.38 is: 120,521,993.64
Step by Step Solution
- Step 1: Write the proportion equation
157,906,547.83 : 217,896,412.12 = 87,340,639.38 : x - Step 2: Convert to fraction form
157,906,547.83/217,896,412.12 = 87,340,639.38/x - Step 3: Cross multiply
157,906,547.83x = 217,896,412.12 × 87,340,639.38 - Step 4: Simplify right side
157,906,547.83x = 19,031,211,953,168,780 - Step 5: Solve for x
x = 19,031,211,953,168,780/157,906,547.83 - Step 6: Final answer
x = 120,521,993.64
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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.