Finding the Fourth Proportional to 147,186,261.40, 203,118,402.65 and 81,109,124.14
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Solution
The fourth proportional to 147,186,261.40, 203,118,402.65 and 81,109,124.14 is: 111,931,341.82
Step by Step Solution
- Step 1: Write the proportion equation
147,186,261.40 : 203,118,402.65 = 81,109,124.14 : x - Step 2: Convert to fraction form
147,186,261.40/203,118,402.65 = 81,109,124.14/x - Step 3: Cross multiply
147,186,261.40x = 203,118,402.65 × 81,109,124.14 - Step 4: Simplify right side
147,186,261.40x = 16,474,755,735,657,356 - Step 5: Solve for x
x = 16,474,755,735,657,356/147,186,261.40 - Step 6: Final answer
x = 111,931,341.82
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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.