Finding the Fourth Proportional to 128,454,909.03, 177,267,946.41 and 69,717,574.98
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Solution
The fourth proportional to 128,454,909.03, 177,267,946.41 and 69,717,574.98 is: 96,210,346.80
Step by Step Solution
- Step 1: Write the proportion equation
128,454,909.03 : 177,267,946.41 = 69,717,574.98 : x - Step 2: Convert to fraction form
128,454,909.03/177,267,946.41 = 69,717,574.98/x - Step 3: Cross multiply
128,454,909.03x = 177,267,946.41 × 69,717,574.98 - Step 4: Simplify right side
128,454,909.03x = 12,358,691,345,389,798 - Step 5: Solve for x
x = 12,358,691,345,389,798/128,454,909.03 - Step 6: Final answer
x = 96,210,346.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.