Finding the Fourth Proportional to 97,841.60, 135,088.80 and 72,353.60
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Solution
The fourth proportional to 97,841.60, 135,088.80 and 72,353.60 is: 99,897.80
Step by Step Solution
- Step 1: Write the proportion equation
97,841.60 : 135,088.80 = 72,353.60 : x - Step 2: Convert to fraction form
97,841.60/135,088.80 = 72,353.60/x - Step 3: Cross multiply
97,841.60x = 135,088.80 × 72,353.60 - Step 4: Simplify right side
97,841.60x = 9,774,160,999.68 - Step 5: Solve for x
x = 9,774,160,999.68/97,841.60 - Step 6: Final answer
x = 99,897.80
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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.