Finding the Fourth Proportional to 121,289.37, 180,985.41 and 108,681.12
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Solution
The fourth proportional to 121,289.37, 180,985.41 and 108,681.12 is: 162,171.65
Step by Step Solution
- Step 1: Write the proportion equation
121,289.37 : 180,985.41 = 108,681.12 : x - Step 2: Convert to fraction form
121,289.37/180,985.41 = 108,681.12/x - Step 3: Cross multiply
121,289.37x = 180,985.41 × 108,681.12 - Step 4: Simplify right side
121,289.37x = 19,669,697,062.46 - Step 5: Solve for x
x = 19,669,697,062.46/121,289.37 - Step 6: Final answer
x = 162,171.65
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.