Finding the Fourth Proportional to 147,438,983.12, 203,506,265.16 and 85,579,250.96
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Solution
The fourth proportional to 147,438,983.12, 203,506,265.16 and 85,579,250.96 is: 118,122,855.77
Step by Step Solution
- Step 1: Write the proportion equation
147,438,983.12 : 203,506,265.16 = 85,579,250.96 : x - Step 2: Convert to fraction form
147,438,983.12/203,506,265.16 = 85,579,250.96/x - Step 3: Cross multiply
147,438,983.12x = 203,506,265.16 × 85,579,250.96 - Step 4: Simplify right side
147,438,983.12x = 17,415,913,738,059,942 - Step 5: Solve for x
x = 17,415,913,738,059,942/147,438,983.12 - Step 6: Final answer
x = 118,122,855.77
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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.