Finding the Fourth Proportional to 159,620,133.42, 220,275,686.70 and 86,281,275.42
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Solution
The fourth proportional to 159,620,133.42, 220,275,686.70 and 86,281,275.42 is: 119,068,107.42
Step by Step Solution
- Step 1: Write the proportion equation
159,620,133.42 : 220,275,686.70 = 86,281,275.42 : x - Step 2: Convert to fraction form
159,620,133.42/220,275,686.70 = 86,281,275.42/x - Step 3: Cross multiply
159,620,133.42x = 220,275,686.70 × 86,281,275.42 - Step 4: Simplify right side
159,620,133.42x = 19,005,667,192,492,332 - Step 5: Solve for x
x = 19,005,667,192,492,332/159,620,133.42 - Step 6: Final answer
x = 119,068,107.42
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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.