Finding the Fourth Proportional to 128,146,869.36, 176,793,869.70 and 94,736,572.56
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Solution
The fourth proportional to 128,146,869.36, 176,793,869.70 and 94,736,572.56 is: 130,700,385.80
Step by Step Solution
- Step 1: Write the proportion equation
128,146,869.36 : 176,793,869.70 = 94,736,572.56 : x - Step 2: Convert to fraction form
128,146,869.36/176,793,869.70 = 94,736,572.56/x - Step 3: Cross multiply
128,146,869.36x = 176,793,869.70 × 94,736,572.56 - Step 4: Simplify right side
128,146,869.36x = 16,748,845,264,997,234 - Step 5: Solve for x
x = 16,748,845,264,997,234/128,146,869.36 - Step 6: Final answer
x = 130,700,385.80
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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.