Finding the Fourth Proportional to 130,651,849.80, 180,298,121.92 and 71,913,259.08
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Solution
The fourth proportional to 130,651,849.80, 180,298,121.92 and 71,913,259.08 is: 99,239,509.99
Step by Step Solution
- Step 1: Write the proportion equation
130,651,849.80 : 180,298,121.92 = 71,913,259.08 : x - Step 2: Convert to fraction form
130,651,849.80/180,298,121.92 = 71,913,259.08/x - Step 3: Cross multiply
130,651,849.80x = 180,298,121.92 × 71,913,259.08 - Step 4: Simplify right side
130,651,849.80x = 12,965,825,553,270,386 - Step 5: Solve for x
x = 12,965,825,553,270,386/130,651,849.80 - Step 6: Final answer
x = 99,239,509.99
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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.