Finding the Fourth Proportional to 153,774.74, 212,209.17 and 86,706.74
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Solution
The fourth proportional to 153,774.74, 212,209.17 and 86,706.74 is: 119,655.32
Step by Step Solution
- Step 1: Write the proportion equation
153,774.74 : 212,209.17 = 86,706.74 : x - Step 2: Convert to fraction form
153,774.74/212,209.17 = 86,706.74/x - Step 3: Cross multiply
153,774.74x = 212,209.17 × 86,706.74 - Step 4: Simplify right side
153,774.74x = 18,399,965,328.81 - Step 5: Solve for x
x = 18,399,965,328.81/153,774.74 - Step 6: Final answer
x = 119,655.32
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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.