Finding the Fourth Proportional to 153,402.07, 211,760.18 and 103,130.23
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Solution
The fourth proportional to 153,402.07, 211,760.18 and 103,130.23 is: 142,363.63
Step by Step Solution
- Step 1: Write the proportion equation
153,402.07 : 211,760.18 = 103,130.23 : x - Step 2: Convert to fraction form
153,402.07/211,760.18 = 103,130.23/x - Step 3: Cross multiply
153,402.07x = 211,760.18 × 103,130.23 - Step 4: Simplify right side
153,402.07x = 21,838,876,068.24 - Step 5: Solve for x
x = 21,838,876,068.24/153,402.07 - Step 6: Final answer
x = 142,363.63
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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.