Finding the Fourth Proportional to 121,155.84, 166,977.12 and 98,569.62
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Solution
The fourth proportional to 121,155.84, 166,977.12 and 98,569.62 is: 135,848.77
Step by Step Solution
- Step 1: Write the proportion equation
121,155.84 : 166,977.12 = 98,569.62 : x - Step 2: Convert to fraction form
121,155.84/166,977.12 = 98,569.62/x - Step 3: Cross multiply
121,155.84x = 166,977.12 × 98,569.62 - Step 4: Simplify right side
121,155.84x = 16,458,871,267.09 - Step 5: Solve for x
x = 16,458,871,267.09/121,155.84 - Step 6: Final answer
x = 135,848.77
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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.