Finding the Fourth Proportional to 118,133,218.68, 163,023,871.85 and 65,209,955.87
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Solution
The fourth proportional to 118,133,218.68, 163,023,871.85 and 65,209,955.87 is: 89,989,755.69
Step by Step Solution
- Step 1: Write the proportion equation
118,133,218.68 : 163,023,871.85 = 65,209,955.87 : x - Step 2: Convert to fraction form
118,133,218.68/163,023,871.85 = 65,209,955.87/x - Step 3: Cross multiply
118,133,218.68x = 163,023,871.85 × 65,209,955.87 - Step 4: Simplify right side
118,133,218.68x = 10,630,779,487,953,866 - Step 5: Solve for x
x = 10,630,779,487,953,866/118,133,218.68 - Step 6: Final answer
x = 89,989,755.69
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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.