Finding the Fourth Proportional to 128,960,267.20, 193,440,400.80 and 99,734,948.80
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Solution
The fourth proportional to 128,960,267.20, 193,440,400.80 and 99,734,948.80 is: 149,602,423.20
Step by Step Solution
- Step 1: Write the proportion equation
128,960,267.20 : 193,440,400.80 = 99,734,948.80 : x - Step 2: Convert to fraction form
128,960,267.20/193,440,400.80 = 99,734,948.80/x - Step 3: Cross multiply
128,960,267.20x = 193,440,400.80 × 99,734,948.80 - Step 4: Simplify right side
128,960,267.20x = 19,292,768,469,639,480 - Step 5: Solve for x
x = 19,292,768,469,639,480/128,960,267.20 - Step 6: Final answer
x = 149,602,423.20
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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.