Finding the Fourth Proportional to 153,163.74, 211,384.95 and 86,095.74
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Solution
The fourth proportional to 153,163.74, 211,384.95 and 86,095.74 is: 118,822.80
Step by Step Solution
- Step 1: Write the proportion equation
153,163.74 : 211,384.95 = 86,095.74 : x - Step 2: Convert to fraction form
153,163.74/211,384.95 = 86,095.74/x - Step 3: Cross multiply
153,163.74x = 211,384.95 × 86,095.74 - Step 4: Simplify right side
153,163.74x = 18,199,343,695.11 - Step 5: Solve for x
x = 18,199,343,695.11/153,163.74 - Step 6: Final answer
x = 118,822.80
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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.