Finding the Fourth Proportional to 158,539.05, 218,785.68 and 90,565.02
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Solution
The fourth proportional to 158,539.05, 218,785.68 and 90,565.02 is: 124,980.75
Step by Step Solution
- Step 1: Write the proportion equation
158,539.05 : 218,785.68 = 90,565.02 : x - Step 2: Convert to fraction form
158,539.05/218,785.68 = 90,565.02/x - Step 3: Cross multiply
158,539.05x = 218,785.68 × 90,565.02 - Step 4: Simplify right side
158,539.05x = 19,814,329,484.91 - Step 5: Solve for x
x = 19,814,329,484.91/158,539.05 - Step 6: Final answer
x = 124,980.75
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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.