Finding the Fourth Proportional to 130,395,616.80, 195,593,425.20 and 78,526,975.20
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Solution
The fourth proportional to 130,395,616.80, 195,593,425.20 and 78,526,975.20 is: 117,790,462.80
Step by Step Solution
- Step 1: Write the proportion equation
130,395,616.80 : 195,593,425.20 = 78,526,975.20 : x - Step 2: Convert to fraction form
130,395,616.80/195,593,425.20 = 78,526,975.20/x - Step 3: Cross multiply
130,395,616.80x = 195,593,425.20 × 78,526,975.20 - Step 4: Simplify right side
130,395,616.80x = 15,359,360,049,963,454 - Step 5: Solve for x
x = 15,359,360,049,963,454/130,395,616.80 - Step 6: Final answer
x = 117,790,462.80
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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.