Finding the Fourth Proportional to 128,832,089.60, 177,793,176.96 and 73,838,558.72
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Solution
The fourth proportional to 128,832,089.60, 177,793,176.96 and 73,838,558.72 is: 101,900,015.58
Step by Step Solution
- Step 1: Write the proportion equation
128,832,089.60 : 177,793,176.96 = 73,838,558.72 : x - Step 2: Convert to fraction form
128,832,089.60/177,793,176.96 = 73,838,558.72/x - Step 3: Cross multiply
128,832,089.60x = 177,793,176.96 × 73,838,558.72 - Step 4: Simplify right side
128,832,089.60x = 13,127,991,936,976,312 - Step 5: Solve for x
x = 13,127,991,936,976,312/128,832,089.60 - Step 6: Final answer
x = 101,900,015.58
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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.