Finding the Fourth Proportional to 118,090.08, 163,009.80 and 86,509.80
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Solution
The fourth proportional to 118,090.08, 163,009.80 and 86,509.80 is: 119,416.85
Step by Step Solution
- Step 1: Write the proportion equation
118,090.08 : 163,009.80 = 86,509.80 : x - Step 2: Convert to fraction form
118,090.08/163,009.80 = 86,509.80/x - Step 3: Cross multiply
118,090.08x = 163,009.80 × 86,509.80 - Step 4: Simplify right side
118,090.08x = 14,101,945,196.04 - Step 5: Solve for x
x = 14,101,945,196.04/118,090.08 - Step 6: Final answer
x = 119,416.85
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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.