Finding the Fourth Proportional to 99,730.19, 138,209.92 and 97,837.76
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Solution
The fourth proportional to 99,730.19, 138,209.92 and 97,837.76 is: 135,587.32
Step by Step Solution
- Step 1: Write the proportion equation
99,730.19 : 138,209.92 = 97,837.76 : x - Step 2: Convert to fraction form
99,730.19/138,209.92 = 97,837.76/x - Step 3: Cross multiply
99,730.19x = 138,209.92 × 97,837.76 - Step 4: Simplify right side
99,730.19x = 13,522,148,982.58 - Step 5: Solve for x
x = 13,522,148,982.58/99,730.19 - Step 6: Final answer
x = 135,587.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.