Finding the Fourth Proportional to 139,843,636.12, 209,358,898.98 and 81,373,114.36
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Solution
The fourth proportional to 139,843,636.12, 209,358,898.98 and 81,373,114.36 is: 121,823,102.59
Step by Step Solution
- Step 1: Write the proportion equation
139,843,636.12 : 209,358,898.98 = 81,373,114.36 : x - Step 2: Convert to fraction form
139,843,636.12/209,358,898.98 = 81,373,114.36/x - Step 3: Cross multiply
139,843,636.12x = 209,358,898.98 × 81,373,114.36 - Step 4: Simplify right side
139,843,636.12x = 17,036,185,628,983,226 - Step 5: Solve for x
x = 17,036,185,628,983,226/139,843,636.12 - Step 6: Final answer
x = 121,823,102.59
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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.