Finding the Fourth Proportional to 122,980.70, 184,438.65 and 38,740.70
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Solution
The fourth proportional to 122,980.70, 184,438.65 and 38,740.70 is: 58,100.84
Step by Step Solution
- Step 1: Write the proportion equation
122,980.70 : 184,438.65 = 38,740.70 : x - Step 2: Convert to fraction form
122,980.70/184,438.65 = 38,740.70/x - Step 3: Cross multiply
122,980.70x = 184,438.65 × 38,740.70 - Step 4: Simplify right side
122,980.70x = 7,145,282,408.06 - Step 5: Solve for x
x = 7,145,282,408.06/122,980.70 - Step 6: Final answer
x = 58,100.84
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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.