Finding the Fourth Proportional to 153,977.16, 212,482.23 and 85,993.08
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Solution
The fourth proportional to 153,977.16, 212,482.23 and 85,993.08 is: 118,666.96
Step by Step Solution
- Step 1: Write the proportion equation
153,977.16 : 212,482.23 = 85,993.08 : x - Step 2: Convert to fraction form
153,977.16/212,482.23 = 85,993.08/x - Step 3: Cross multiply
153,977.16x = 212,482.23 × 85,993.08 - Step 4: Simplify right side
153,977.16x = 18,272,001,402.97 - Step 5: Solve for x
x = 18,272,001,402.97/153,977.16 - Step 6: Final answer
x = 118,666.96
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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.