Finding the Fourth Proportional to 130,159.80, 195,239.70 and 77,671.80
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Solution
The fourth proportional to 130,159.80, 195,239.70 and 77,671.80 is: 116,507.70
Step by Step Solution
- Step 1: Write the proportion equation
130,159.80 : 195,239.70 = 77,671.80 : x - Step 2: Convert to fraction form
130,159.80/195,239.70 = 77,671.80/x - Step 3: Cross multiply
130,159.80x = 195,239.70 × 77,671.80 - Step 4: Simplify right side
130,159.80x = 15,164,618,930.46 - Step 5: Solve for x
x = 15,164,618,930.46/130,159.80 - Step 6: Final answer
x = 116,507.70
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1.5x scale
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.