Finding the Fourth Proportional to 130,368.20, 195,206.70 and 102,720.20
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Solution
The fourth proportional to 130,368.20, 195,206.70 and 102,720.20 is: 153,807.99
Step by Step Solution
- Step 1: Write the proportion equation
130,368.20 : 195,206.70 = 102,720.20 : x - Step 2: Convert to fraction form
130,368.20/195,206.70 = 102,720.20/x - Step 3: Cross multiply
130,368.20x = 195,206.70 × 102,720.20 - Step 4: Simplify right side
130,368.20x = 20,051,671,265.34 - Step 5: Solve for x
x = 20,051,671,265.34/130,368.20 - Step 6: Final answer
x = 153,807.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.