Finding the Fourth Proportional to 92,538,821.74, 137,980,911.09 and 89,996,374.79
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Solution
The fourth proportional to 92,538,821.74, 137,980,911.09 and 89,996,374.79 is: 134,189,970.81
Step by Step Solution
- Step 1: Write the proportion equation
92,538,821.74 : 137,980,911.09 = 89,996,374.79 : x - Step 2: Convert to fraction form
92,538,821.74/137,980,911.09 = 89,996,374.79/x - Step 3: Cross multiply
92,538,821.74x = 137,980,911.09 × 89,996,374.79 - Step 4: Simplify right side
92,538,821.74x = 12,417,781,788,321,308 - Step 5: Solve for x
x = 12,417,781,788,321,308/92,538,821.74 - Step 6: Final answer
x = 134,189,970.81
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.