Finding the Fourth Proportional to 128,964,815.19, 177,966,746.28 and 70,226,191.80
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Solution
The fourth proportional to 128,964,815.19, 177,966,746.28 and 70,226,191.80 is: 96,909,586.07
Step by Step Solution
- Step 1: Write the proportion equation
128,964,815.19 : 177,966,746.28 = 70,226,191.80 : x - Step 2: Convert to fraction form
128,964,815.19/177,966,746.28 = 70,226,191.80/x - Step 3: Cross multiply
128,964,815.19x = 177,966,746.28 × 70,226,191.80 - Step 4: Simplify right side
128,964,815.19x = 12,497,926,858,281,216 - Step 5: Solve for x
x = 12,497,926,858,281,216/128,964,815.19 - Step 6: Final answer
x = 96,909,586.07
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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.