Finding the Fourth Proportional to 128,518,117.08, 177,358,082.92 and 69,783,257.76
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Solution
The fourth proportional to 128,518,117.08, 177,358,082.92 and 69,783,257.76 is: 96,302,568.83
Step by Step Solution
- Step 1: Write the proportion equation
128,518,117.08 : 177,358,082.92 = 69,783,257.76 : x - Step 2: Convert to fraction form
128,518,117.08/177,358,082.92 = 69,783,257.76/x - Step 3: Cross multiply
128,518,117.08x = 177,358,082.92 × 69,783,257.76 - Step 4: Simplify right side
128,518,117.08x = 12,376,624,816,225,814 - Step 5: Solve for x
x = 12,376,624,816,225,814/128,518,117.08 - Step 6: Final answer
x = 96,302,568.83
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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.