Finding the Fourth Proportional to 130,990.84, 180,767.36 and 71,374.84
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Solution
The fourth proportional to 130,990.84, 180,767.36 and 71,374.84 is: 98,497.28
Step by Step Solution
- Step 1: Write the proportion equation
130,990.84 : 180,767.36 = 71,374.84 : x - Step 2: Convert to fraction form
130,990.84/180,767.36 = 71,374.84/x - Step 3: Cross multiply
130,990.84x = 180,767.36 × 71,374.84 - Step 4: Simplify right side
130,990.84x = 12,902,241,397.22 - Step 5: Solve for x
x = 12,902,241,397.22/130,990.84 - Step 6: Final answer
x = 98,497.28
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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.