Finding the Fourth Proportional to 160,357,107.78, 221,292,808.74 and 87,018,249.78
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Solution
The fourth proportional to 160,357,107.78, 221,292,808.74 and 87,018,249.78 is: 120,085,184.70
Step by Step Solution
- Step 1: Write the proportion equation
160,357,107.78 : 221,292,808.74 = 87,018,249.78 : x - Step 2: Convert to fraction form
160,357,107.78/221,292,808.74 = 87,018,249.78/x - Step 3: Cross multiply
160,357,107.78x = 221,292,808.74 × 87,018,249.78 - Step 4: Simplify right side
160,357,107.78x = 19,256,512,905,455,088 - Step 5: Solve for x
x = 19,256,512,905,455,088/160,357,107.78 - Step 6: Final answer
x = 120,085,184.70
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1.5x scale
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.