Finding the Fourth Proportional to 130,031,506.50, 194,787,362.07 and 78,187,722.99
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Solution
The fourth proportional to 130,031,506.50, 194,787,362.07 and 78,187,722.99 is: 117,125,308.45
Step by Step Solution
- Step 1: Write the proportion equation
130,031,506.50 : 194,787,362.07 = 78,187,722.99 : x - Step 2: Convert to fraction form
130,031,506.50/194,787,362.07 = 78,187,722.99/x - Step 3: Cross multiply
130,031,506.50x = 194,787,362.07 × 78,187,722.99 - Step 4: Simplify right side
130,031,506.50x = 15,229,980,307,481,992 - Step 5: Solve for x
x = 15,229,980,307,481,992/130,031,506.50 - Step 6: Final answer
x = 117,125,308.45
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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.