Finding the Fourth Proportional to 142,725,143.80, 214,087,715.70 and 125,719,031.80
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Solution
The fourth proportional to 142,725,143.80, 214,087,715.70 and 125,719,031.80 is: 188,578,547.70
Step by Step Solution
- Step 1: Write the proportion equation
142,725,143.80 : 214,087,715.70 = 125,719,031.80 : x - Step 2: Convert to fraction form
142,725,143.80/214,087,715.70 = 125,719,031.80/x - Step 3: Cross multiply
142,725,143.80x = 214,087,715.70 × 125,719,031.80 - Step 4: Simplify right side
142,725,143.80x = 26,914,900,338,077,656 - Step 5: Solve for x
x = 26,914,900,338,077,656/142,725,143.80 - Step 6: Final answer
x = 188,578,547.70
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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.