Finding the Fourth Proportional to 155,785,615.14, 214,970,756.58 and 86,153,663.82
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Solution
The fourth proportional to 155,785,615.14, 214,970,756.58 and 86,153,663.82 is: 118,884,649.76
Step by Step Solution
- Step 1: Write the proportion equation
155,785,615.14 : 214,970,756.58 = 86,153,663.82 : x - Step 2: Convert to fraction form
155,785,615.14/214,970,756.58 = 86,153,663.82/x - Step 3: Cross multiply
155,785,615.14x = 214,970,756.58 × 86,153,663.82 - Step 4: Simplify right side
155,785,615.14x = 18,520,518,293,524,372 - Step 5: Solve for x
x = 18,520,518,293,524,372/155,785,615.14 - Step 6: Final answer
x = 118,884,649.76
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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.