Finding the Fourth Proportional to 106,429,783.80, 159,644,675.70 and 80,920,615.80
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Solution
The fourth proportional to 106,429,783.80, 159,644,675.70 and 80,920,615.80 is: 121,380,923.70
Step by Step Solution
- Step 1: Write the proportion equation
106,429,783.80 : 159,644,675.70 = 80,920,615.80 : x - Step 2: Convert to fraction form
106,429,783.80/159,644,675.70 = 80,920,615.80/x - Step 3: Cross multiply
106,429,783.80x = 159,644,675.70 × 80,920,615.80 - Step 4: Simplify right side
106,429,783.80x = 12,918,545,466,835,294 - Step 5: Solve for x
x = 12,918,545,466,835,294/106,429,783.80 - Step 6: Final answer
x = 121,380,923.70
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1.5x scale
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.