Finding the Fourth Proportional to 142,478,184.20, 213,717,276.30 and 97,128,552.20
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Solution
The fourth proportional to 142,478,184.20, 213,717,276.30 and 97,128,552.20 is: 145,692,828.30
Step by Step Solution
- Step 1: Write the proportion equation
142,478,184.20 : 213,717,276.30 = 97,128,552.20 : x - Step 2: Convert to fraction form
142,478,184.20/213,717,276.30 = 97,128,552.20/x - Step 3: Cross multiply
142,478,184.20x = 213,717,276.30 × 97,128,552.20 - Step 4: Simplify right side
142,478,184.20x = 20,758,049,627,146,376 - Step 5: Solve for x
x = 20,758,049,627,146,376/142,478,184.20 - Step 6: Final answer
x = 145,692,828.30
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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.