Finding the Fourth Proportional to 128,387,992,686.54, 192,414,459,935.18 and 71,725,566,930.09
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Solution
The fourth proportional to 128,387,992,686.54, 192,414,459,935.18 and 71,725,566,930.09 is: 107,494,758,159.30
Step by Step Solution
- Step 1: Write the proportion equation
128,387,992,686.54 : 192,414,459,935.18 = 71,725,566,930.09 : x - Step 2: Convert to fraction form
128,387,992,686.54/192,414,459,935.18 = 71,725,566,930.09/x - Step 3: Cross multiply
128,387,992,686.54x = 192,414,459,935.18 × 71,725,566,930.09 - Step 4: Simplify right side
128,387,992,686.54x = 13,801,036,224,397,871,939,584 - Step 5: Solve for x
x = 13,801,036,224,397,871,939,584/128,387,992,686.54 - Step 6: Final answer
x = 107,494,758,159.30
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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.