Finding the Fourth Proportional to 138,698,052.51, 191,400,966.79 and 76,817,062.47
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Solution
The fourth proportional to 138,698,052.51, 191,400,966.79 and 76,817,062.47 is: 106,006,247.07
Step by Step Solution
- Step 1: Write the proportion equation
138,698,052.51 : 191,400,966.79 = 76,817,062.47 : x - Step 2: Convert to fraction form
138,698,052.51/191,400,966.79 = 76,817,062.47/x - Step 3: Cross multiply
138,698,052.51x = 191,400,966.79 × 76,817,062.47 - Step 4: Simplify right side
138,698,052.51x = 14,702,860,022,725,824 - Step 5: Solve for x
x = 14,702,860,022,725,824/138,698,052.51 - Step 6: Final answer
x = 106,006,247.07
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.