Finding the Fourth Proportional to 155,382,139.48, 214,427,373.80 and 85,767,535.12
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Solution
The fourth proportional to 155,382,139.48, 214,427,373.80 and 85,767,535.12 is: 118,359,210.23
Step by Step Solution
- Step 1: Write the proportion equation
155,382,139.48 : 214,427,373.80 = 85,767,535.12 : x - Step 2: Convert to fraction form
155,382,139.48/214,427,373.80 = 85,767,535.12/x - Step 3: Cross multiply
155,382,139.48x = 214,427,373.80 × 85,767,535.12 - Step 4: Simplify right side
155,382,139.48x = 18,390,907,313,080,868 - Step 5: Solve for x
x = 18,390,907,313,080,868/155,382,139.48 - Step 6: Final answer
x = 118,359,210.23
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.