Finding the Fourth Proportional to 105,159.40, 157,479.90 and 69,908.20
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Solution
The fourth proportional to 105,159.40, 157,479.90 and 69,908.20 is: 104,689.99
Step by Step Solution
- Step 1: Write the proportion equation
105,159.40 : 157,479.90 = 69,908.20 : x - Step 2: Convert to fraction form
105,159.40/157,479.90 = 69,908.20/x - Step 3: Cross multiply
105,159.40x = 157,479.90 × 69,908.20 - Step 4: Simplify right side
105,159.40x = 11,009,136,345.18 - Step 5: Solve for x
x = 11,009,136,345.18/105,159.40 - Step 6: Final answer
x = 104,689.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.