Finding the Fourth Proportional to 124,368.05, 171,655.61 and 79,037.19
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Solution
The fourth proportional to 124,368.05, 171,655.61 and 79,037.19 is: 109,088.92
Step by Step Solution
- Step 1: Write the proportion equation
124,368.05 : 171,655.61 = 79,037.19 : x - Step 2: Convert to fraction form
124,368.05/171,655.61 = 79,037.19/x - Step 3: Cross multiply
124,368.05x = 171,655.61 × 79,037.19 - Step 4: Simplify right side
124,368.05x = 13,567,176,666.95 - Step 5: Solve for x
x = 13,567,176,666.95/124,368.05 - Step 6: Final answer
x = 109,088.92
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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.