Finding the Fourth Proportional to 156,134,785.74, 215,467,288.02 and 86,521,329.18
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Solution
The fourth proportional to 156,134,785.74, 215,467,288.02 and 86,521,329.18 is: 119,400,145.62
Step by Step Solution
- Step 1: Write the proportion equation
156,134,785.74 : 215,467,288.02 = 86,521,329.18 : x - Step 2: Convert to fraction form
156,134,785.74/215,467,288.02 = 86,521,329.18/x - Step 3: Cross multiply
156,134,785.74x = 215,467,288.02 × 86,521,329.18 - Step 4: Simplify right side
156,134,785.74x = 18,642,516,154,300,292 - Step 5: Solve for x
x = 18,642,516,154,300,292/156,134,785.74 - Step 6: Final answer
x = 119,400,145.62
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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.