Finding the Fourth Proportional to 128,708,864.55, 193,137,946.43 and 47,937,997.35
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Solution
The fourth proportional to 128,708,864.55, 193,137,946.43 and 47,937,997.35 is: 71,934,799.49
Step by Step Solution
- Step 1: Write the proportion equation
128,708,864.55 : 193,137,946.43 = 47,937,997.35 : x - Step 2: Convert to fraction form
128,708,864.55/193,137,946.43 = 47,937,997.35/x - Step 3: Cross multiply
128,708,864.55x = 193,137,946.43 × 47,937,997.35 - Step 4: Simplify right side
128,708,864.55x = 9,258,646,363,906,092 - Step 5: Solve for x
x = 9,258,646,363,906,092/128,708,864.55 - Step 6: Final answer
x = 71,934,799.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.