Finding the Fourth Proportional to 128,051,398.42, 192,064,170.94 and 86,817,032.70
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Solution
The fourth proportional to 128,051,398.42, 192,064,170.94 and 86,817,032.70 is: 130,216,784.94
Step by Step Solution
- Step 1: Write the proportion equation
128,051,398.42 : 192,064,170.94 = 86,817,032.70 : x - Step 2: Convert to fraction form
128,051,398.42/192,064,170.94 = 86,817,032.70/x - Step 3: Cross multiply
128,051,398.42x = 192,064,170.94 × 86,817,032.70 - Step 4: Simplify right side
128,051,398.42x = 16,674,441,408,562,286 - Step 5: Solve for x
x = 16,674,441,408,562,286/128,051,398.42 - Step 6: Final answer
x = 130,216,784.94
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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.