Finding the Fourth Proportional to 128,904,354.18, 177,890,278.68 and 70,168,707.54
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Solution
The fourth proportional to 128,904,354.18, 177,890,278.68 and 70,168,707.54 is: 96,834,052.02
Step by Step Solution
- Step 1: Write the proportion equation
128,904,354.18 : 177,890,278.68 = 70,168,707.54 : x - Step 2: Convert to fraction form
128,904,354.18/177,890,278.68 = 70,168,707.54/x - Step 3: Cross multiply
128,904,354.18x = 177,890,278.68 × 70,168,707.54 - Step 4: Simplify right side
128,904,354.18x = 12,482,330,938,906,018 - Step 5: Solve for x
x = 12,482,330,938,906,018/128,904,354.18 - Step 6: Final answer
x = 96,834,052.02
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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.