Finding the Fourth Proportional to 113,970.98, 157,278.90 and 62,987.12
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Solution
The fourth proportional to 113,970.98, 157,278.90 and 62,987.12 is: 86,921.64
Step by Step Solution
- Step 1: Write the proportion equation
113,970.98 : 157,278.90 = 62,987.12 : x - Step 2: Convert to fraction form
113,970.98/157,278.90 = 62,987.12/x - Step 3: Cross multiply
113,970.98x = 157,278.90 × 62,987.12 - Step 4: Simplify right side
113,970.98x = 9,906,544,947.77 - Step 5: Solve for x
x = 9,906,544,947.77/113,970.98 - Step 6: Final answer
x = 86,921.64
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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.