Finding the Fourth Proportional to 100,031,979.36, 149,893,014.54 and 69,386,138.85
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Solution
The fourth proportional to 100,031,979.36, 149,893,014.54 and 69,386,138.85 is: 103,971,725.70
Step by Step Solution
- Step 1: Write the proportion equation
100,031,979.36 : 149,893,014.54 = 69,386,138.85 : x - Step 2: Convert to fraction form
100,031,979.36/149,893,014.54 = 69,386,138.85/x - Step 3: Cross multiply
100,031,979.36x = 149,893,014.54 × 69,386,138.85 - Step 4: Simplify right side
100,031,979.36x = 10,400,497,519,517,508 - Step 5: Solve for x
x = 10,400,497,519,517,508/100,031,979.36 - Step 6: Final answer
x = 103,971,725.70
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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.