Finding the Fourth Proportional to 139,848.84, 192,996.36 and 79,417.80
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Solution
The fourth proportional to 139,848.84, 192,996.36 and 79,417.80 is: 109,599.38
Step by Step Solution
- Step 1: Write the proportion equation
139,848.84 : 192,996.36 = 79,417.80 : x - Step 2: Convert to fraction form
139,848.84/192,996.36 = 79,417.80/x - Step 3: Cross multiply
139,848.84x = 192,996.36 × 79,417.80 - Step 4: Simplify right side
139,848.84x = 15,327,346,319.21 - Step 5: Solve for x
x = 15,327,346,319.21/139,848.84 - Step 6: Final answer
x = 109,599.38
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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.