Finding the Fourth Proportional to 159,479,621.80, 239,219,432.70 and 78,858,053.80
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Solution
The fourth proportional to 159,479,621.80, 239,219,432.70 and 78,858,053.80 is: 118,287,080.70
Step by Step Solution
- Step 1: Write the proportion equation
159,479,621.80 : 239,219,432.70 = 78,858,053.80 : x - Step 2: Convert to fraction form
159,479,621.80/239,219,432.70 = 78,858,053.80/x - Step 3: Cross multiply
159,479,621.80x = 239,219,432.70 × 78,858,053.80 - Step 4: Simplify right side
159,479,621.80x = 18,864,378,893,862,076 - Step 5: Solve for x
x = 18,864,378,893,862,076/159,479,621.80 - Step 6: Final answer
x = 118,287,080.70
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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.