Finding the Fourth Proportional to 165,974,659.80, 248,961,989.70 and 154,637,251.80
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Solution
The fourth proportional to 165,974,659.80, 248,961,989.70 and 154,637,251.80 is: 231,955,877.70
Step by Step Solution
- Step 1: Write the proportion equation
165,974,659.80 : 248,961,989.70 = 154,637,251.80 : x - Step 2: Convert to fraction form
165,974,659.80/248,961,989.70 = 154,637,251.80/x - Step 3: Cross multiply
165,974,659.80x = 248,961,989.70 × 154,637,251.80 - Step 4: Simplify right side
165,974,659.80x = 38,498,797,889,867,904 - Step 5: Solve for x
x = 38,498,797,889,867,904/165,974,659.80 - Step 6: Final answer
x = 231,955,877.70
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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.