Finding the Fourth Proportional to 122,543,432.40, 183,563,206.20 and 84,248,187.60
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Solution
The fourth proportional to 122,543,432.40, 183,563,206.20 and 84,248,187.60 is: 126,199,071.87
Step by Step Solution
- Step 1: Write the proportion equation
122,543,432.40 : 183,563,206.20 = 84,248,187.60 : x - Step 2: Convert to fraction form
122,543,432.40/183,563,206.20 = 84,248,187.60/x - Step 3: Cross multiply
122,543,432.40x = 183,563,206.20 × 84,248,187.60 - Step 4: Simplify right side
122,543,432.40x = 15,464,867,432,395,082 - Step 5: Solve for x
x = 15,464,867,432,395,082/122,543,432.40 - Step 6: Final answer
x = 126,199,071.87
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.