Finding the Fourth Proportional to 113,987.68, 157,299.78 and 63,686.68
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Solution
The fourth proportional to 113,987.68, 157,299.78 and 63,686.68 is: 87,885.82
Step by Step Solution
- Step 1: Write the proportion equation
113,987.68 : 157,299.78 = 63,686.68 : x - Step 2: Convert to fraction form
113,987.68/157,299.78 = 63,686.68/x - Step 3: Cross multiply
113,987.68x = 157,299.78 × 63,686.68 - Step 4: Simplify right side
113,987.68x = 10,017,900,752.93 - Step 5: Solve for x
x = 10,017,900,752.93/113,987.68 - Step 6: Final answer
x = 87,885.82
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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.