Finding the Fourth Proportional to 122,984,789.39, 169,720,138.64 and 70,060,712.68
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Solution
The fourth proportional to 122,984,789.39, 169,720,138.64 and 70,060,712.68 is: 96,684,426.82
Step by Step Solution
- Step 1: Write the proportion equation
122,984,789.39 : 169,720,138.64 = 70,060,712.68 : x - Step 2: Convert to fraction form
122,984,789.39/169,720,138.64 = 70,060,712.68/x - Step 3: Cross multiply
122,984,789.39x = 169,720,138.64 × 70,060,712.68 - Step 4: Simplify right side
122,984,789.39x = 11,890,713,869,017,658 - Step 5: Solve for x
x = 11,890,713,869,017,658/122,984,789.39 - Step 6: Final answer
x = 96,684,426.82
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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.