Finding the Fourth Proportional to 128,051,402.92, 192,064,177.68 and 86,817,037.20
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Solution
The fourth proportional to 128,051,402.92, 192,064,177.68 and 86,817,037.20 is: 130,216,791.68
Step by Step Solution
- Step 1: Write the proportion equation
128,051,402.92 : 192,064,177.68 = 86,817,037.20 : x - Step 2: Convert to fraction form
128,051,402.92/192,064,177.68 = 86,817,037.20/x - Step 3: Cross multiply
128,051,402.92x = 192,064,177.68 × 86,817,037.20 - Step 4: Simplify right side
128,051,402.92x = 16,674,442,858,431,970 - Step 5: Solve for x
x = 16,674,442,858,431,970/128,051,402.92 - Step 6: Final answer
x = 130,216,791.68
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.