Finding the Fourth Proportional to 99,601,347.20, 149,402,020.80 and 70,376,028.80
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Solution
The fourth proportional to 99,601,347.20, 149,402,020.80 and 70,376,028.80 is: 105,564,043.20
Step by Step Solution
- Step 1: Write the proportion equation
99,601,347.20 : 149,402,020.80 = 70,376,028.80 : x - Step 2: Convert to fraction form
99,601,347.20/149,402,020.80 = 70,376,028.80/x - Step 3: Cross multiply
99,601,347.20x = 149,402,020.80 × 70,376,028.80 - Step 4: Simplify right side
99,601,347.20x = 10,514,320,918,599,000 - Step 5: Solve for x
x = 10,514,320,918,599,000/99,601,347.20 - Step 6: Final answer
x = 105,564,043.20
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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.