Finding the Fourth Proportional to 122,947.36, 169,679.52 and 71,957.05
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Solution
The fourth proportional to 122,947.36, 169,679.52 and 71,957.05 is: 99,307.85
Step by Step Solution
- Step 1: Write the proportion equation
122,947.36 : 169,679.52 = 71,957.05 : x - Step 2: Convert to fraction form
122,947.36/169,679.52 = 71,957.05/x - Step 3: Cross multiply
122,947.36x = 169,679.52 × 71,957.05 - Step 4: Simplify right side
122,947.36x = 12,209,637,280.42 - Step 5: Solve for x
x = 12,209,637,280.42/122,947.36 - Step 6: Final answer
x = 99,307.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.