Finding the Fourth Proportional to 98,314.21, 135,235.33 and 86,154.49
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Solution
The fourth proportional to 98,314.21, 135,235.33 and 86,154.49 is: 118,509.12
Step by Step Solution
- Step 1: Write the proportion equation
98,314.21 : 135,235.33 = 86,154.49 : x - Step 2: Convert to fraction form
98,314.21/135,235.33 = 86,154.49/x - Step 3: Cross multiply
98,314.21x = 135,235.33 × 86,154.49 - Step 4: Simplify right side
98,314.21x = 11,651,130,886.13 - Step 5: Solve for x
x = 11,651,130,886.13/98,314.21 - Step 6: Final answer
x = 118,509.12
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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.