Finding the Fourth Proportional to 103,239,036.38, 142,472,807.10 and 56,199,143.49
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Solution
The fourth proportional to 103,239,036.38, 142,472,807.10 and 56,199,143.49 is: 77,556,416.75
Step by Step Solution
- Step 1: Write the proportion equation
103,239,036.38 : 142,472,807.10 = 56,199,143.49 : x - Step 2: Convert to fraction form
103,239,036.38/142,472,807.10 = 56,199,143.49/x - Step 3: Cross multiply
103,239,036.38x = 142,472,807.10 × 56,199,143.49 - Step 4: Simplify right side
103,239,036.38x = 8,006,849,729,635,991 - Step 5: Solve for x
x = 8,006,849,729,635,991/103,239,036.38 - Step 6: Final answer
x = 77,556,416.75
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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.