Finding the Fourth Proportional to 128,735,559.20, 177,653,838.12 and 69,998,245.86
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Solution
The fourth proportional to 128,735,559.20, 177,653,838.12 and 69,998,245.86 is: 96,596,908.55
Step by Step Solution
- Step 1: Write the proportion equation
128,735,559.20 : 177,653,838.12 = 69,998,245.86 : x - Step 2: Convert to fraction form
128,735,559.20/177,653,838.12 = 69,998,245.86/x - Step 3: Cross multiply
128,735,559.20x = 177,653,838.12 × 69,998,245.86 - Step 4: Simplify right side
128,735,559.20x = 12,435,457,038,696,400 - Step 5: Solve for x
x = 12,435,457,038,696,400/128,735,559.20 - Step 6: Final answer
x = 96,596,908.55
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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.