Finding the Fourth Proportional to 113,907.55, 157,088.41 and 87,000.07
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Solution
The fourth proportional to 113,907.55, 157,088.41 and 87,000.07 is: 119,980.66
Step by Step Solution
- Step 1: Write the proportion equation
113,907.55 : 157,088.41 = 87,000.07 : x - Step 2: Convert to fraction form
113,907.55/157,088.41 = 87,000.07/x - Step 3: Cross multiply
113,907.55x = 157,088.41 × 87,000.07 - Step 4: Simplify right side
113,907.55x = 13,666,702,666.19 - Step 5: Solve for x
x = 13,666,702,666.19/113,907.55 - Step 6: Final answer
x = 119,980.66
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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.