Finding the Fourth Proportional to 153,718.78, 212,095.80 and 93,288.08
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Solution
The fourth proportional to 153,718.78, 212,095.80 and 93,288.08 is: 128,715.63
Step by Step Solution
- Step 1: Write the proportion equation
153,718.78 : 212,095.80 = 93,288.08 : x - Step 2: Convert to fraction form
153,718.78/212,095.80 = 93,288.08/x - Step 3: Cross multiply
153,718.78x = 212,095.80 × 93,288.08 - Step 4: Simplify right side
153,718.78x = 19,786,009,958.06 - Step 5: Solve for x
x = 19,786,009,958.06/153,718.78 - Step 6: Final answer
x = 128,715.63
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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.