Finding the Fourth Proportional to 153,908.84, 212,392.74 and 85,921.46
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Solution
The fourth proportional to 153,908.84, 212,392.74 and 85,921.46 is: 118,570.80
Step by Step Solution
- Step 1: Write the proportion equation
153,908.84 : 212,392.74 = 85,921.46 : x - Step 2: Convert to fraction form
153,908.84/212,392.74 = 85,921.46/x - Step 3: Cross multiply
153,908.84x = 212,392.74 × 85,921.46 - Step 4: Simplify right side
153,908.84x = 18,249,094,314.20 - Step 5: Solve for x
x = 18,249,094,314.20/153,908.84 - Step 6: Final answer
x = 118,570.80
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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.