Finding the Fourth Proportional to 153,117.81, 211,312.16 and 85,149.99
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Solution
The fourth proportional to 153,117.81, 211,312.16 and 85,149.99 is: 117,512.31
Step by Step Solution
- Step 1: Write the proportion equation
153,117.81 : 211,312.16 = 85,149.99 : x - Step 2: Convert to fraction form
153,117.81/211,312.16 = 85,149.99/x - Step 3: Cross multiply
153,117.81x = 211,312.16 × 85,149.99 - Step 4: Simplify right side
153,117.81x = 17,993,227,885.13 - Step 5: Solve for x
x = 17,993,227,885.13/153,117.81 - Step 6: Final answer
x = 117,512.31
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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.