Finding the Fourth Proportional to 156,134,781.99, 215,467,282.85 and 86,521,325.40
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Solution
The fourth proportional to 156,134,781.99, 215,467,282.85 and 86,521,325.40 is: 119,400,140.41
Step by Step Solution
- Step 1: Write the proportion equation
156,134,781.99 : 215,467,282.85 = 86,521,325.40 : x - Step 2: Convert to fraction form
156,134,781.99/215,467,282.85 = 86,521,325.40/x - Step 3: Cross multiply
156,134,781.99x = 215,467,282.85 × 86,521,325.40 - Step 4: Simplify right side
156,134,781.99x = 18,642,514,892,086,084 - Step 5: Solve for x
x = 18,642,514,892,086,084/156,134,781.99 - Step 6: Final answer
x = 119,400,140.41
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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.