Finding the Fourth Proportional to 153,246.49, 211,476.12 and 85,263.58
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Solution
The fourth proportional to 153,246.49, 211,476.12 and 85,263.58 is: 117,661.49
Step by Step Solution
- Step 1: Write the proportion equation
153,246.49 : 211,476.12 = 85,263.58 : x - Step 2: Convert to fraction form
153,246.49/211,476.12 = 85,263.58/x - Step 3: Cross multiply
153,246.49x = 211,476.12 × 85,263.58 - Step 4: Simplify right side
153,246.49x = 18,031,211,075.71 - Step 5: Solve for x
x = 18,031,211,075.71/153,246.49 - Step 6: Final answer
x = 117,661.49
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1.5x scale
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.