Finding the Fourth Proportional to 156,842,515.81, 235,213,860.30 and 51,778,296.42
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Solution
The fourth proportional to 156,842,515.81, 235,213,860.30 and 51,778,296.42 is: 77,650,966.75
Step by Step Solution
- Step 1: Write the proportion equation
156,842,515.81 : 235,213,860.30 = 51,778,296.42 : x - Step 2: Convert to fraction form
156,842,515.81/235,213,860.30 = 51,778,296.42/x - Step 3: Cross multiply
156,842,515.81x = 235,213,860.30 × 51,778,296.42 - Step 4: Simplify right side
156,842,515.81x = 12,178,972,980,705,872 - Step 5: Solve for x
x = 12,178,972,980,705,872/156,842,515.81 - Step 6: Final answer
x = 77,650,966.75
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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.