Finding the Fourth Proportional to 138,564,959.40, 207,847,439.10 and 106,316,332.20
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Solution
The fourth proportional to 138,564,959.40, 207,847,439.10 and 106,316,332.20 is: 159,474,498.30
Step by Step Solution
- Step 1: Write the proportion equation
138,564,959.40 : 207,847,439.10 = 106,316,332.20 : x - Step 2: Convert to fraction form
138,564,959.40/207,847,439.10 = 106,316,332.20/x - Step 3: Cross multiply
138,564,959.40x = 207,847,439.10 × 106,316,332.20 - Step 4: Simplify right side
138,564,959.40x = 22,097,577,382,274,868 - Step 5: Solve for x
x = 22,097,577,382,274,868/138,564,959.40 - Step 6: Final answer
x = 159,474,498.30
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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.