Finding the Fourth Proportional to 155,812,177,261.44, 215,002,664,730.90 and 87,227,345,985.12
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Solution
The fourth proportional to 155,812,177,261.44, 215,002,664,730.90 and 87,227,345,985.12 is: 120,363,582,319.61
Step by Step Solution
- Step 1: Write the proportion equation
155,812,177,261.44 : 215,002,664,730.90 = 87,227,345,985.12 : x - Step 2: Convert to fraction form
155,812,177,261.44/215,002,664,730.90 = 87,227,345,985.12/x - Step 3: Cross multiply
155,812,177,261.44x = 215,002,664,730.90 × 87,227,345,985.12 - Step 4: Simplify right side
155,812,177,261.44x = 18,754,111,824,204,969,017,344 - Step 5: Solve for x
x = 18,754,111,824,204,969,017,344/155,812,177,261.44 - Step 6: Final answer
x = 120,363,582,319.61
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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.