Finding the Fourth Proportional to 159,440,212.80, 239,160,319.20 and 78,818,644.80
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Solution
The fourth proportional to 159,440,212.80, 239,160,319.20 and 78,818,644.80 is: 118,227,967.20
Step by Step Solution
- Step 1: Write the proportion equation
159,440,212.80 : 239,160,319.20 = 78,818,644.80 : x - Step 2: Convert to fraction form
159,440,212.80/239,160,319.20 = 78,818,644.80/x - Step 3: Cross multiply
159,440,212.80x = 239,160,319.20 × 78,818,644.80 - Step 4: Simplify right side
159,440,212.80x = 18,850,292,249,279,420 - Step 5: Solve for x
x = 18,850,292,249,279,420/159,440,212.80 - Step 6: Final answer
x = 118,227,967.20
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1.5x scale
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.