Finding the Fourth Proportional to 153,962.13, 212,455.62 and 85,973.79
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Solution
The fourth proportional to 153,962.13, 212,455.62 and 85,973.79 is: 118,637.06
Step by Step Solution
- Step 1: Write the proportion equation
153,962.13 : 212,455.62 = 85,973.79 : x - Step 2: Convert to fraction form
153,962.13/212,455.62 = 85,973.79/x - Step 3: Cross multiply
153,962.13x = 212,455.62 × 85,973.79 - Step 4: Simplify right side
153,962.13x = 18,265,614,858.20 - Step 5: Solve for x
x = 18,265,614,858.20/153,962.13 - Step 6: Final answer
x = 118,637.06
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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.