Finding the Fourth Proportional to 128,158,819.35, 176,860,019.84 and 69,421,484.43
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Solution
The fourth proportional to 128,158,819.35, 176,860,019.84 and 69,421,484.43 is: 95,802,108.48
Step by Step Solution
- Step 1: Write the proportion equation
128,158,819.35 : 176,860,019.84 = 69,421,484.43 : x - Step 2: Convert to fraction form
128,158,819.35/176,860,019.84 = 69,421,484.43/x - Step 3: Cross multiply
128,158,819.35x = 176,860,019.84 × 69,421,484.43 - Step 4: Simplify right side
128,158,819.35x = 12,277,885,113,264,946 - Step 5: Solve for x
x = 12,277,885,113,264,946/128,158,819.35 - Step 6: Final answer
x = 95,802,108.48
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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.